Which privacy laws apply to your business in Wisconsin?
There is no comprehensive Wisconsin consumer-privacy law. The operative general statute is the breach-notification law, Wis. Stat. § 134.98, which applies to any entity — a person, other than an individual, that conducts business in Wisconsin and maintains personal information in the ordinary course of business, licenses personal information in the state, maintains a depository account for a resident, or lends money to a resident — and the definition expressly sweeps in state government and every city, village, town, and county . It carries no size or revenue threshold, and it governs breach response rather than day-to-day data handling.
Wisconsin came close to changing this. The 2025–26 legislature considered companion bills — 2025 Assembly Bill 172 and Senate Bill 166 — that would have created a controller-and-processor consumer-data-protection framework at Wis. Stat. § 100.80, in the same family as the comprehensive acts other states have adopted. AB 172 won a unanimous 10–0 committee recommendation, but neither bill ever received a floor vote: on March 23, 2026, each was recorded on its official bill history as Failed to pass pursuant to Senate Joint Resolution 1 — the mechanism by which Wisconsin bills die when the session's last general-business floorperiod closes. A 2027-28 successor is plausible because WDPA-style bills have now appeared in consecutive bienniums, but it would need to be introduced and passed as new legislation. Until one passes, Wisconsin residents have no general state-law rights to access, delete, correct, or opt out of the sale of their personal data, and businesses face no state notice-at-collection, consent, or data-protection-assessment duties.
What governs today is a patchwork. Beyond § 134.98, record-disposal and patient-health-record rules impose concrete state obligations, and insurance licensees also have a separate data-security subchapter enforced by the Commissioner of Insurance. A financial institution, medical business, or tax preparation business may not dispose of a record containing personal information without shredding it, erasing it, or otherwise rendering it unreadable or inaccessible , on pain of a forfeiture of up to $1,000 per incident . Insurance licensees sit under their own data-security subchapter (2021 Wis. Act 73, ch. 601 subch. IX), built around an information security program — the administrative, technical, and physical safeguards a licensee uses to handle nonpublic information — with the Commissioner of Insurance empowered to examine, investigate, and enforce . Health-care providers answer to the patient health-care-records statutes, whose damages remedy is covered in the consumer-lawsuit prong below. Two cross-cutting state laws round out the picture: § 100.18, the fraudulent-representations statute, polices untrue, deceptive, or misleading statements to the public, and § 995.50 codifies a general right of privacy. Everything else comes from the federal overlay — FTC Act § 5 for deceptive or unfair data practices, GLBA for financial institutions, HIPAA for covered health entities, and COPPA for child-directed services. This note is written to stay durable: a program built to the breach statute and the federal overlay upgrades rather than restarts if Wisconsin later enacts an omnibus law.
Sources for this answer
Primary law
A.1 Wis. Stat. § 134.98(1)(a)The breach-notification statute applies to any entity that conducts business in Wisconsin and maintains personal information, licenses personal information, maintains depository accounts, or lends money to residents — expressly including state and local government.
“Entity” means a person, other than an individual, that does any of the following: a. Conducts business in this state and maintains personal information in the ordinary course of business. b. Licenses personal information in this state. c. Maintains for a resident of this state a depository account as defined in s. 815.18 (2) (e) . d. Lends money to a resident of this state. 2. “Entity” includes all of the following: a. The state and any office, department, independent agency, authority, institution, association, society, or other body in state government created or authorized to be created by the constitution or any law, including the legislature and the courts. b. A city, village, town, or county.
See Wis. Stat. § 134.98(1)(a).
Primary law
A.2 Wis. Stat. § 134.97(2)A financial institution, medical business, or tax preparation business may not dispose of a record containing personal information without shredding, erasing, or otherwise rendering the information unreadable or protecting it from unauthorized access.
A financial institution, medical business or tax preparation business may not dispose of a record containing personal information unless the financial institution, medical business, tax preparation business or other person under contract with the financial institution, medical business or tax preparation business does any of the following: (a) Shreds the record before the disposal of the record. (b) Erases the personal information contained in the record before the disposal of the record. (c) Modifies the record to make the personal information unreadable before the disposal of the record. (d) Takes actions that it reasonably believes will ensure that no unauthorized person will have access to the personal information contained in the record for the period between the record’s disposal and the record’s destruction.
See Wis. Stat. § 134.97(2).
Primary law
A.3 Wis. Stat. § 134.97(4)(a)A covered business that violates the record-disposal rule may be required to forfeit up to $1,000, with acts arising out of the same incident treated as a single violation.
A financial institution, medical business or tax preparation business that violates sub. (2) may be required to forfeit not more than $1,000. Acts arising out of the same incident or occurrence shall be a single violation.
See Wis. Stat. § 134.97(4)(a).
Primary law
A.4 Wis. Stat. § 601.95(5)Wisconsin's insurance data-security subchapter is organized around an information security program — the administrative, technical, and physical safeguards a licensee uses to handle nonpublic information.
“Information security program” means the administrative, technical, and physical safeguards that a licensee uses to access, collect, distribute, process, protect, store, use, transmit, dispose of, or otherwise handle nonpublic information.
See Wis. Stat. § 601.95(5).
Primary law
A.5 Wis. Stat. § 601.956The Commissioner of Insurance has the power to examine and investigate licensees and to take action necessary or appropriate to enforce the insurance data-security subchapter.
The commissioner shall have the power to examine and investigate the affairs of any licensee to determine whether the licensee has engaged in conduct in violation of this subchapter and to take action that is necessary or appropriate to enforce the provisions of this subchapter.
See Wis. Stat. § 601.956.
What must your Wisconsin privacy policy contain?
No Wisconsin statute requires a general consumer privacy policy or fixes what it must say. The operative rule is that whatever you publish has to be true. Under Section 5 of the FTC Act, a policy that misstates how you collect, use, share, retain, or secure data can create FTC Act exposure if the mismatch is unfair or deceptive , and Wisconsin's own fraudulent-representations statute, § 100.18, prohibits placing before the public a statement or representation containing any assertion of fact that is untrue, deceptive, or misleading . Where a sectoral regime applies, that regime supplies the contents — a HIPAA covered entity, for example, must give individuals a notice of the uses and disclosures of their protected health information and of their rights and the entity's duties .
In practice the drafting question in Wisconsin is less what must be included and more does the policy match actual practice. Build the policy from the federal and sectoral overlay. A financial institution may not share nonpublic personal information with nonaffiliated third parties without first giving the consumer a GLBA-compliant privacy notice . An operator of a website or online service directed to children must post notice of what information it collects from children, how it uses it, and its disclosure practices, and must obtain verifiable parental consent . A HIPAA covered entity uses the Notice of Privacy Practices framework. For everyone else, follow best practice — describe the categories of data collected, the purposes, the third parties you share with, and how users exercise any choices you offer — and then honor it, because the enforceable obligation is consistency between the statement and the conduct.
The § 100.18 angle deserves one scoping note. A published privacy policy that misstates data practices fits the statute's language — it is a statement to the public, and most commercial policies are published with intent to sell a product or service — but the statute's private remedy is narrower than its prohibition, reaching only a plaintiff who suffered pecuniary loss because of the representation. That limit, and who can actually sue, is developed in the consumer-lawsuit prong below. There is no Wisconsin-mandated contents checklist to cite here, which is itself the point: the contents are overlay-driven, not state-statute-driven.
Sources for this answer
Primary law
B.1 FTC Act § 5Section 5 of the FTC Act declares unfair or deceptive acts or practices in or affecting commerce unlawful, supplying a federal hook when a privacy-policy mismatch is unfair or deceptive.
Unfair methods of competition in or affecting commerce, and unfair or deceptive acts or practices in or affecting commerce, are hereby declared unlawful.
See 15 U.S.C. § 45(a)(1).
Primary law
B.2 Wis. Stat. § 100.18(1)Wisconsin's fraudulent-representations statute prohibits public statements or representations, made with intent to sell, that contain any assertion of fact which is untrue, deceptive or misleading — language broad enough to reach a false published privacy policy.
No person, firm, corporation or association, or agent or employee thereof, with intent to sell, distribute, increase the consumption of or in any wise dispose of any real estate, merchandise, securities, employment, service, or anything offered by such person, firm, corporation or association, or agent or employee thereof, directly or indirectly, to the public for sale, hire, use or other distribution, or with intent to induce the public in any manner to enter into any contract or obligation relating to the purchase, sale, hire, use or lease of any real estate, merchandise, securities, employment or service, shall make, publish, disseminate, circulate, or place before the public, or cause, directly or indirectly, to be made, published, disseminated, circulated, or placed before the public, in this state, in a newspaper, magazine or other publication, or in the form of a book, notice, handbill, poster, bill, circular, pamphlet, letter, sign, placard, card, label, or over any radio or television station, or in any other way similar or dissimilar to the foregoing, an advertisement, announcement, statement or representation of any kind to the public relating to such purchase, sale, hire, use or lease of such real estate, merchandise, securities, service or employment or to the terms or conditions thereof, which advertisement, announcement, statement or representation contains any assertion, representation or statement of fact which is untrue, deceptive or misleading.
See Wis. Stat. § 100.18(1).
Primary law
B.3 HIPAA Notice of Privacy PracticesA HIPAA covered entity must give individuals a notice describing the uses and disclosures of their protected health information and their rights and the entity's legal duties.
an individual has a right to adequate notice of the uses and disclosures of protected health information that may be made by the covered entity, and of the individual's rights and the covered entity's legal duties with respect to protected health information
See 45 C.F.R. § 164.520(a)(1).
Primary law
B.4 GLBA privacy notice, 15 U.S.C. § 6802A financial institution may not disclose nonpublic personal information to a nonaffiliated third party unless it has provided the consumer a privacy notice complying with the GLBA.
Except as otherwise provided in this subchapter, a financial institution may not, directly or through any affiliate, disclose to a nonaffiliated third party any nonpublic personal information, unless such financial institution provides or has provided to the consumer a notice that complies with section 6803 of this title.
See 15 U.S.C. § 6802(a).
Primary law
B.5 COPPA, 15 U.S.C. § 6502COPPA requires a child-directed website or online service to post notice of what information it collects from children, how it uses that information, and its disclosure practices, and to obtain verifiable parental consent.
require the operator of any website or online service directed to children that collects personal information from children or the operator of a website or online service that has actual knowledge that it is collecting personal information from a child— (i) to provide notice on the website of what information is collected from children by the operator, how the operator uses such information, and the operator’s disclosure practices for such information; and (ii) to obtain verifiable parental consent for the collection, use, or disclosure of personal information from children
See 15 U.S.C. § 6502(b)(1)(A).
What must your contracts with vendors say?
Wisconsin has no omnibus data-processing-agreement requirement — no state statute prescribes controller-to-processor terms, audit rights, deletion clauses, or subprocessor flow-downs for general private-sector contracts. Vendor data terms are instead driven by the sectoral regimes that apply to your business: the GLBA Safeguards Rule requires financial institutions to oversee service providers by contract and to require them to implement appropriate safeguards , and HIPAA requires a business-associate agreement with mandatory data-protection, breach-reporting, and subcontractor terms before protected health information changes hands .
One Wisconsin-specific wrinkle makes the vendor contract worth drafting carefully. The breach statute gives data-holding vendors only a default duty: a person that stores personal information pertaining to Wisconsin residents but does not own or license it — and has not entered into a contract with the owner — must notify the owner of an unauthorized acquisition as soon as practicable . Once vendor and owner sign a contract, that statutory default falls away and the contract governs. So the practical move is to write the breach-reporting duty into the agreement expressly — notice to your business within a fixed number of days of discovery, cooperation with your own 45-day consumer-notice clock, and indemnity for vendor-caused incidents — rather than assume the statute fills the gap. Outside the regulated verticals, carrying the familiar protections forward as a matter of best practice — processing limited to documented instructions, confidentiality, reasonable security, breach notification back to your business, and return or deletion of data at the end of the engagement — costs little and future-proofs the contract against a later Wisconsin omnibus law.
Sources for this answer
Primary law
C.1 GLBA Safeguards RuleThe GLBA Safeguards Rule requires a financial institution to oversee its service providers, including by requiring them by contract to implement and maintain appropriate safeguards for customer information.
Oversee service providers, by: (1) Taking reasonable steps to select and retain service providers that are capable of maintaining appropriate safeguards for the customer information at issue; (2) Requiring your service providers by contract to implement and maintain such safeguards; and (3) Periodically assessing your service providers based on the risk they present and the continued adequacy of their safeguards.
See 16 C.F.R. § 314.4(f)(2).
Primary law
C.2 HIPAA Business Associate ContractsHIPAA requires a written business-associate contract that establishes permitted uses and disclosures, requires safeguards and breach reporting, flows restrictions to subcontractors, and addresses return or destruction of protected health information.
A contract between the covered entity and a business associate must: (i) Establish the permitted and required uses and disclosures of protected health information by the business associate. The contract may not authorize the business associate to use or further disclose the information in a manner that would violate the requirements of this subpart, if done by the covered entity, except that: (A) The contract may permit the business associate to use and disclose protected health information for the proper management and administration of the business associate, as provided in paragraph (e)(4) of this section; and (B) The contract may permit the business associate to provide data aggregation services relating to the health care operations of the covered entity. (ii) Provide that the business associate will: (A) Not use or further disclose the information other than as permitted or required by the contract or as required by law; (B) Use appropriate safeguards and comply, where applicable, with subpart C of this part with respect to electronic protected health information, to prevent use or disclosure of the information other than as provided for by its contract; (C) Report to the covered entity any use or disclosure of the information not provided for by its contract of which it becomes aware, including breaches of unsecured protected health information as required by § 164.410; (D) In accordance with § 164.502(e)(1)(ii), ensure that any subcontractors that create, receive, maintain, or transmit protected health information on behalf of the business associate agree to the same restrictions and conditions that apply to the business associate with respect to such information; (E) Make available protected health information in accordance with § 164.524; (F) Make available protected health information for amendment and incorporate any amendments to protected health information in accordance with § 164.526; (G) Make available the information required to provide an accounting of disclosures in accordance with § 164.528; (H) To the extent the business associate is to carry out a covered entity's obligation under this subpart, comply with the requirements of this subpart that apply to the covered entity in the performance of such obligation. (I) Make its internal practices, books, and records relating to the use and disclosure of protected health information received from, or created or received by the business associate on behalf of, the covered entity available to the Secretary for purposes of determining the covered entity's compliance with this subpart; and (J) At termination of the contract, if feasible, return or destroy all protected health information received from, or created or received by the business associate on behalf of, the covered entity that the business associate still maintains in any form and retain no copies of such information or, if such return or destruction is not feasible, extend the protections of the contract to the information and limit further uses and disclosures to those purposes that make the return or destruction of the information infeasible.
See 45 C.F.R. § 164.504(e)(2).
Primary law
C.3 Wis. Stat. § 134.98(2)(bm)A person that stores Wisconsin residents' personal information without owning or licensing it, and without a contract with the owner, must notify the owner of an unauthorized acquisition as soon as practicable — a statutory default that applies only in the absence of a contract.
If a person, other than an individual, that stores personal information pertaining to a resident of this state, but does not own or license the personal information, knows that the personal information has been acquired by a person whom the person storing the personal information has not authorized to acquire the personal information, and the person storing the personal information has not entered into a contract with the person that owns or licenses the personal information, the person storing the personal information shall notify the person that owns or licenses the personal information of the acquisition as soon as practicable.
See Wis. Stat. § 134.98(2)(bm).
When must you notify people of a data breach in Wisconsin?
For an entity with its principal place of business in Wisconsin, or an entity that maintains or licenses personal information in Wisconsin, the statute provides that “the entity shall make reasonable efforts to notify each subject of the personal information.” Out-of-state entities have a parallel duty to notify each affected Wisconsin resident when they know Wisconsin residents' personal information was acquired by an unauthorized person . The clock is explicit: “an entity shall provide the notice required under sub. (2) within a reasonable time, not to exceed 45 days after the entity learns of the acquisition of personal information.” When a single incident requires notice to 1,000 or more individuals, the entity must also notify the nationwide consumer reporting agencies without unreasonable delay .
Personal information is defined as the individual's last name plus first name or initial, combined with an unencrypted, unredacted data element — Social Security number, driver's license or state ID number, financial-account number or an access code that would permit access to the account, DNA profile, or unique biometric data . Encryption and redaction are built into the definition, so a breach of properly encrypted data generally triggers nothing unless the protective element was compromised too. Two exceptions excuse notice entirely: where the acquisition does not create a material risk of identity theft or fraud to the data subject, and where an employee or agent acquired the information in good faith for a lawful purpose of the entity . The materiality screen does real work in practice — it is the statutory basis for not notifying after low-risk incidents — but it puts the burden of that judgment on the business. The statute also stands down for the major federally regulated sectors: it does not apply to an entity subject to and in compliance with the GLBA privacy and security requirements (with a breach policy in effect), or to a HIPAA-regulated entity complying with the federal privacy and security rules .
Operationally, notice may be sent by mail or by a method the entity previously used to communicate with the subject, with a reasonably calculated actual-notice method if neither a mailing address nor a prior communication channel is available . A recipient who makes a written request can require the notifying entity to identify the personal information that was acquired . Law enforcement can delay notice to protect an investigation or homeland security, and during that delay the entity may not provide notice or publicize the unauthorized acquisition except as the requesting agency authorizes .
Statutory gap — § 134.98 has no enforcement provision. The section prescribes no penalty, names no enforcement agency, and creates no private right of action, and chapter 100's penalty section does not pick it up: § 100.26 imposes penalties only for violations of provisions of chapter 100, and nowhere references § 134.98, which sits in chapter 134 . The only consequence the statute itself states is evidentiary: “Failure to comply with this section is not negligence or a breach of any duty, but may be evidence of negligence or a breach of a legal duty.” Two readings of the practical exposure follow. On one reading, a missed 45-day deadline carries no direct state-law sanction — no forfeiture, no agency action, no statutory damages. On the other, the exposure is real but indirect: noncompliance is admissible evidence in the negligence and contract suits that routinely follow a breach, and breach-response conduct by a business outside the GLBA and HIPAA carve-outs can create federal exposure if it is unfair or deceptive under FTC Act § 5 . Both readings measure conduct against the same yardstick, so treat the 45-day clock as the standard a court or regulator would apply even though no Wisconsin official is designated to start that clock against you.
Sources for this answer
Primary law
D.1 Wis. Stat. § 134.98(2)(a)–(b)In-state entities, entities maintaining or licensing personal information in Wisconsin, and out-of-state entities with Wisconsin-resident personal information must make reasonable efforts to notify the affected subjects or residents after unauthorized acquisition.
If an entity whose principal place of business is located in this state or an entity that maintains or licenses personal information in this state knows that personal information in the entity’s possession has been acquired by a person whom the entity has not authorized to acquire the personal information, the entity shall make reasonable efforts to notify each subject of the personal information. The notice shall indicate that the entity knows of the unauthorized acquisition of personal information pertaining to the subject of the personal information. (b) If an entity whose principal place of business is not located in this state knows that personal information pertaining to a resident of this state has been acquired by a person whom the entity has not authorized to acquire the personal information, the entity shall make reasonable efforts to notify each resident of this state who is the subject of the personal information. The notice shall indicate that the entity knows of the unauthorized acquisition of personal information pertaining to the resident of this state who is the subject of the personal information.
See Wis. Stat. § 134.98(2)(a)–(b).
Primary law
D.4 Wis. Stat. § 134.98(1)(b)Personal information is a name combined with an unencrypted, unredacted element: Social Security number, driver's license or state ID number, financial-account number or access code, DNA profile, or unique biometric data.
“Personal information” means an individual’s last name and the individual’s first name or first initial, in combination with and linked to any of the following elements, if the element is not publicly available information and is not encrypted, redacted, or altered in a manner that renders the element unreadable: 1. The individual’s social security number. 2. The individual’s driver’s license number or state identification number. 3. The number of the individual’s financial account number, including a credit or debit card account number, or any security code, access code, or password that would permit access to the individual’s financial account. 4. The individual’s deoxyribonucleic acid profile, as defined in s. 939.74 (2d) (a) . 5. The individual’s unique biometric data, including fingerprint, voice print, retina or iris image, or any other unique physical representation.
See Wis. Stat. § 134.98(1)(b).
Primary law
D.2 Wis. Stat. § 134.98(3)(a)Notice must be given within a reasonable time, not to exceed 45 days after the entity learns of the acquisition, with reasonableness judged by the number of notices and available communication methods.
Subject to sub. (5) , an entity shall provide the notice required under sub. (2) within a reasonable time, not to exceed 45 days after the entity learns of the acquisition of personal information. A determination as to reasonableness under this paragraph shall include consideration of the number of notices that an entity must provide and the methods of communication available to the entity.
See Wis. Stat. § 134.98(3)(a).
Primary law
D.3 Wis. Stat. § 134.98(2)(br)When a single incident requires notice to 1,000 or more individuals, the entity must also notify the nationwide consumer reporting agencies without unreasonable delay.
If, as the result of a single incident, an entity is required under par. (a) or (b) to notify 1,000 or more individuals that personal information pertaining to the individuals has been acquired, the entity shall without unreasonable delay notify all consumer reporting agencies that compile and maintain files on consumers on a nationwide basis, as defined in 15 USC 1681a (p), of the timing, distribution, and content of the notices sent to the individuals.
See Wis. Stat. § 134.98(2)(br).
Primary law
D.5 Wis. Stat. § 134.98(2)(cm)Notice is excused where the acquisition does not create a material risk of identity theft or fraud, or where an employee or agent acquired the information in good faith for a lawful purpose of the entity.
Notwithstanding pars. (a) , (b) , (bm) , and (br) , an entity is not required to provide notice of the acquisition of personal information if any of the following applies: 1. The acquisition of personal information does not create a material risk of identity theft or fraud to the subject of the personal information. 2. The personal information was acquired in good faith by an employee or agent of the entity, if the personal information is used for a lawful purpose of the entity.
See Wis. Stat. § 134.98(2)(cm).
Primary law
D.7 Wis. Stat. § 134.98(3)(b)Breach notice may be sent by mail or by a previously used communication method, with an actual-notice fallback when no mailing address or prior channel is reasonably available.
An entity shall provide the notice required under sub. (2) by mail or by a method the entity has previously employed to communicate with the subject of the personal information. If an entity cannot with reasonable diligence determine the mailing address of the subject of the personal information, and if the entity has not previously communicated with the subject of the personal information, the entity shall provide notice by a method reasonably calculated to provide actual notice to the subject of the personal information.
See Wis. Stat. § 134.98(3)(b).
Primary law
D.8 Wis. Stat. § 134.98(3)(c)A person who receives breach notice may submit a written request requiring the entity to identify the personal information that was acquired.
Upon written request by a person who has received a notice under sub. (2) (a) or (b) , the entity that provided the notice shall identify the personal information that was acquired.
See Wis. Stat. § 134.98(3)(c).
Primary law
D.9 Wis. Stat. § 134.98(5)Law enforcement may delay required breach notice to protect an investigation or homeland security, and the entity may not notify or publicize the acquisition except as authorized during the delay.
A law enforcement agency may, in order to protect an investigation or homeland security, ask an entity not to provide a notice that is otherwise required under sub. (2) for any period of time and the notification process required under sub. (2) shall begin at the end of that time period. Notwithstanding subs. (2) and (3) , if an entity receives such a request, the entity may not provide notice of or publicize an unauthorized acquisition of personal information, except as authorized by the law enforcement agency that made the request.
See Wis. Stat. § 134.98(5).
Primary law
D.6 Wis. Stat. § 134.98(3m)The breach statute does not apply to entities subject to and in compliance with the GLBA privacy and security requirements (with a breach policy in effect) or to HIPAA-regulated entities complying with the federal rules.
This section does not apply to any of the following: (a) An entity that is subject to, and in compliance with, the privacy and security requirements of 15 USC 6801 to 6827 , or a person that has a contractual obligation to such an entity, if the entity or person has in effect a policy concerning breaches of information security. (b) An entity that is described in 45 CFR 164.104 (a) , if the entity complies with the requirements of 45 CFR part 164 .
See Wis. Stat. § 134.98(3m).
Primary law
D.11 Wis. Stat. § 134.98(4)The statute's only stated consequence for noncompliance is evidentiary — failure to comply is not negligence or a breach of duty, but may be evidence of negligence or a breach of a legal duty.
Failure to comply with this section is not negligence or a breach of any duty, but may be evidence of negligence or a breach of a legal duty.
See Wis. Stat. § 134.98(4).
Primary law
D.10 Wis. Stat. § 100.26(1)Chapter 100's penalty section reaches only violations of chapter 100 provisions — it nowhere references § 134.98, leaving the breach statute without a penalty backbone.
Any person who violates any provision of this chapter, except s. 100.18 , 100.20 , 100.206 or 100.51 , for which no specific penalty is prescribed shall be fined not to exceed $200, or imprisoned in the county jail not more than 6 months or both.
See Wis. Stat. § 100.26(1).
Primary law
D.12 FTC Act § 5FTC Act § 5 declares unfair or deceptive acts or practices unlawful, supplying a federal hook when breach-response conduct is unfair or deceptive.
Unfair methods of competition in or affecting commerce, and unfair or deceptive acts or practices in or affecting commerce, are hereby declared unlawful.
See 15 U.S.C. § 45(a)(1).
Can a consumer sue your business in Wisconsin over privacy?
Not under the breach statute — § 134.98 creates no private right of action, and its own text limits the consequence of noncompliance to potential evidence in a suit brought on some other legal theory . Wisconsin's only general privacy private action is the codified right of privacy: “The right of privacy is recognized in this state.” A person whose privacy is unreasonably invaded is entitled to equitable relief, compensatory damages based either on the plaintiff's loss or the defendant's unjust enrichment, and a reasonable amount for attorney fees . Alongside it, § 100.18 prohibits public commercial representations containing an assertion of fact that is untrue, deceptive, or misleading ; any person suffering pecuniary loss because of such a violation may sue and recover that loss plus costs and reasonable attorney fees .
Section 995.50 defines invasion of privacy in four branches: intrusion upon another's privacy, of a kind highly offensive to a reasonable person, in a place a reasonable person would consider private or in a manner actionable as trespass; the use of a living person's name, portrait, or picture for advertising or trade purposes without prior written consent — the statutory misappropriation branch, and the one most naturally suited to commercial exploitation of identity; publicity given to private life, of a kind highly offensive to a reasonable person, subject to a public-record safe harbor; and conduct prohibited by the nonconsensual-depiction crimes, regardless of any criminal proceeding . The statute is to be interpreted in accordance with the developing common law of privacy, and — unlike the fraudulent-representations action — its compensatory damages are not limited to pecuniary loss, though they may not be presumed without proof . Those branches are tort-shaped: the intrusion branch is tied to a place, and the publicity branch requires publicity. How far they reach into ordinary commercial data collection, sale, or breach fact patterns is an open question the statutory text does not answer, so treat § 995.50 as a genuine but untested exposure for data practices, with the misappropriation branch the most plausible vehicle.
The § 100.18 action is the workhorse for false statements about data practices, but it is tightly scoped. The Department of Agriculture, Trade and Consumer Protection enforces the section publicly , while the private action belongs only to a plaintiff who can show pecuniary loss caused by a public commercial representation that violates the section — a hurdle that screens out most pure privacy-injury theories, where the harm is exposure rather than money out of pocket . Suits also face a hard three-year limit running from the unlawful act .
Two sectoral private actions are stronger than anything general-purpose in Wisconsin. The patient health-care-records statute makes a person who knowingly and willfully violates the records-confidentiality rules liable for actual damages plus exemplary damages of up to $25,000 and attorney fees, with a negligence tier capped at $1,000 in exemplary damages . And a financial institution, medical business, or tax preparation business that disposes of records in violation of the disposal statute is liable to the affected person for resulting damages . The net effect for most businesses: Wisconsin consumer-privacy litigation arrives through the privacy tort, the pecuniary-loss UDAP action, or post-breach negligence claims that use § 134.98 noncompliance as evidence — not through a statutory privacy class action of the kind comprehensive-law states authorize.
Sources for this answer
Primary law
E.1 Wis. Stat. § 134.98(4)The breach statute creates no private right of action — failure to comply is not itself negligence or a breach of duty, but may be evidence of negligence or a breach of a legal duty in a suit brought on another theory.
Failure to comply with this section is not negligence or a breach of any duty, but may be evidence of negligence or a breach of a legal duty.
See Wis. Stat. § 134.98(4).
Primary law
E.2 Wis. Stat. § 995.50(1)Wisconsin codifies a right of privacy: one whose privacy is unreasonably invaded is entitled to equitable relief, compensatory damages based on the plaintiff's loss or the defendant's unjust enrichment, and reasonable attorney fees.
The right of privacy is recognized in this state. One whose privacy is unreasonably invaded is entitled to the following relief: (a) Equitable relief to prevent and restrain such invasion, excluding prior restraint against constitutionally protected communication privately and through the public media; (b) Compensatory damages based either on plaintiff’s loss or defendant’s unjust enrichment; and (c) A reasonable amount for attorney fees.
See Wis. Stat. § 995.50(1).
Primary law
E.5 Wis. Stat. § 995.50(2)(am)Invasion of privacy has four statutory branches: highly offensive intrusion in a private place, misappropriation of name, portrait, or picture for advertising or trade without written consent, highly offensive publicity given to private life, and conduct prohibited by the nonconsensual-depiction crimes.
In this section, “invasion of privacy” means any of the following: 1. Intrusion upon the privacy of another of a nature highly offensive to a reasonable person, except as provided under par. (bm) , in a place that a reasonable person would consider private, or in a manner that is actionable for trespass. 2. The use, for advertising purposes or for purposes of trade, of the name, portrait or picture of any living person, without having first obtained the written consent of the person or, if the person is a minor, of his or her parent or guardian. 3. Publicity given to a matter concerning the private life of another, of a kind highly offensive to a reasonable person, if the defendant has acted either unreasonably or recklessly as to whether there was a legitimate public interest in the matter involved, or with actual knowledge that none existed. It is not an invasion of privacy to communicate any information available to the public as a matter of public record. 4. Conduct that is prohibited under s. 942.09 or 942.095 , regardless of whether there has been a criminal action related to the conduct, and regardless of the outcome of the criminal action, if there has been a criminal action related to the conduct.
See Wis. Stat. § 995.50(2)(am).
Primary law
E.6 Wis. Stat. § 995.50(3)–(4)The right of privacy is interpreted in accordance with the developing common law of privacy, and compensatory damages are not limited to pecuniary loss but may not be presumed without proof.
The right of privacy recognized in this section shall be interpreted in accordance with the developing common law of privacy, including defenses of absolute and qualified privilege, with due regard for maintaining freedom of communication, privately and through the public media. (4) Compensatory damages are not limited to damages for pecuniary loss, but shall not be presumed in the absence of proof.
See Wis. Stat. § 995.50(3)–(4).
Primary law
E.3 Wis. Stat. § 100.18(1)Section 100.18 prohibits public commercial statements or representations, made with intent to sell or induce a transaction, that contain an assertion of fact which is untrue, deceptive, or misleading.
No person, firm, corporation or association, or agent or employee thereof, with intent to sell, distribute, increase the consumption of or in any wise dispose of any real estate, merchandise, securities, employment, service, or anything offered by such person, firm, corporation or association, or agent or employee thereof, directly or indirectly, to the public for sale, hire, use or other distribution, or with intent to induce the public in any manner to enter into any contract or obligation relating to the purchase, sale, hire, use or lease of any real estate, merchandise, securities, employment or service, shall make, publish, disseminate, circulate, or place before the public, or cause, directly or indirectly, to be made, published, disseminated, circulated, or placed before the public, in this state, in a newspaper, magazine or other publication, or in the form of a book, notice, handbill, poster, bill, circular, pamphlet, letter, sign, placard, card, label, or over any radio or television station, or in any other way similar or dissimilar to the foregoing, an advertisement, announcement, statement or representation of any kind to the public relating to such purchase, sale, hire, use or lease of such real estate, merchandise, securities, service or employment or to the terms or conditions thereof, which advertisement, announcement, statement or representation contains any assertion, representation or statement of fact which is untrue, deceptive or misleading.
See Wis. Stat. § 100.18(1).
Primary law
E.4 Wis. Stat. § 100.18(11)(b)2.The fraudulent-representations statute gives a private damages action only to a person suffering pecuniary loss because of a violation, with recovery of that loss plus costs and reasonable attorney fees.
Any person suffering pecuniary loss because of a violation of this section by any other person may sue in any court of competent jurisdiction and shall recover such pecuniary loss, together with costs, including reasonable attorney fees, except that no attorney fees may be recovered from a person licensed under ch. 452 while that person is engaged in real estate practice, as defined in s. 452.01 (6) .
See Wis. Stat. § 100.18(11)(b)2.
Primary law
E.7 Wis. Stat. § 100.18(11)(a)The Department of Agriculture, Trade and Consumer Protection is charged with public enforcement of the fraudulent-representations statute.
The department of agriculture, trade and consumer protection shall enforce this section.
See Wis. Stat. § 100.18(11)(a).
Primary law
E.8 Wis. Stat. § 100.18(11)(b)3.A fraudulent-representations action must be commenced within three years of the unlawful act or practice.
No action may be commenced under this section more than 3 years after the occurrence of the unlawful act or practice which is the subject of the action.
See Wis. Stat. § 100.18(11)(b)3.
Primary law
E.9 Wis. Stat. § 146.84(1)(b)–(bm)Knowing and willful violations of the patient health-care-records statutes carry liability for actual damages plus exemplary damages up to $25,000 and attorney fees; negligent violations carry exemplary damages up to $1,000 plus fees.
Any person, including the state or any political subdivision of the state, who violates s. 146.82 or 146.83 in a manner that is knowing and willful shall be liable to any person injured as a result of the violation for actual damages to that person, exemplary damages of not more than $25,000 and costs and reasonable actual attorney fees. (bm) Any person, including the state or any political subdivision of the state, who negligently violates s. 146.82 or 146.83 shall be liable to any person injured as a result of the violation for actual damages to that person, exemplary damages of not more than $1,000 and costs and reasonable actual attorney fees.
See Wis. Stat. § 146.84(1)(b)–(bm).
Primary law
E.10 Wis. Stat. § 134.97(3)(a)A financial institution, medical business, or tax preparation business that disposes of records containing personal information in violation of the disposal rule is liable to the affected person for the resulting damages.
A financial institution, medical business or tax preparation business is liable to a person whose personal information is disposed of in violation of sub. (2) for the amount of damages resulting from the violation.
See Wis. Stat. § 134.97(3)(a).