EdLaw nat/us/state/ma/security-breach/SECURITY-BREACH.md

language: en · last checked: 2026-10-08

Massachusetts — security breaches (G.L. c. 93H)

Massachusetts' security-breach chapter in full: definitions, the regulations on safeguarding personal information it authorises, the duties to notify on a breach (including the duty of a person that maintains or stores data it does not own to notify the owner), credit monitoring, and enforcement by the Attorney General.

G.L. c. 93H, §1. Definitions

Verbatim from the General Court of Massachusetts, G.L. c. 93H, §1 (route: Internet Archive id_ capture 2026-05-15).

G.L. c. 93H, §2. Regulations to safeguard personal information of commonwealth residents

Verbatim from the General Court of Massachusetts, G.L. c. 93H, §2 (route: Internet Archive id_ capture 2026-07-14).

G.L. c. 93H, §3. Duty to report known security breach or unauthorized use of personal information

Verbatim from the General Court of Massachusetts, G.L. c. 93H, §3 (route: Internet Archive id_ capture 2026-03-10).

Upon receipt of this notice, the director of consumer affairs and business regulation shall identify any relevant consumer reporting agency or state agency, as deemed appropriate by said director, and forward the names of the identified consumer reporting agencies and state agencies to the notifying person or agency. Such person or agency shall, as soon as practicable and without unreasonable delay, also provide notice, in accordance with this chapter, to the consumer reporting agencies and state agencies identified by the director of consumer affairs and business regulation.

The notice to be provided to the resident shall include, but shall not be limited to: (i) the resident's right to obtain a police report; (ii) how a resident may request a security freeze and the necessary information to be provided when requesting the security freeze; (iii) that there shall be no charge for a security freeze; and (iv) mitigation services to be provided pursuant to this chapter; provided, however, that said notice shall not include the nature of the breach of security or unauthorized acquisition or use, or the number of residents of the commonwealth affected by said breach of security or unauthorized access or use. The person or agency that experienced the breach of security shall provide a sample copy of the notice it sent to consumers to the attorney general and the office of consumer affairs and business regulation. A notice provided pursuant to this section shall not be delayed on grounds that the total number of residents affected is not yet ascertained. In such case, and where otherwise necessary to update or correct the information required, a person or agency shall provide additional notice as soon as practicable and without unreasonable delay upon learning such additional information.

G.L. c. 93H, §3A. Breaches of security including social security numbers; offer of credit monitoring services required

Verbatim from the General Court of Massachusetts, G.L. c. 93H, §3A (route: Internet Archive id_ capture 2026-07-25).

G.L. c. 93H, §4. Delay in notice when notice would impede criminal investigation; cooperation with law enforcement

Verbatim from the General Court of Massachusetts, G.L. c. 93H, §4 (route: Internet Archive id_ capture 2026-02-11).

Section 4. Notwithstanding section 3, notice may be delayed if a law enforcement agency determines that provision of such notice may impede a criminal investigation and has notified the attorney general, in writing, thereof and informs the person or agency of such determination. If notice is delayed due to such determination and as soon as the law enforcement agency determines and informs the person or agency that notification no longer poses a risk of impeding an investigation, notice shall be provided, as soon as practicable and without unreasonable delay. The person or agency shall cooperate with law enforcement in its investigation of any breach of security or unauthorized acquisition or use, which shall include the sharing of information relevant to the incident; provided however, that such disclosure shall not require the disclosure of confidential business information or trade secrets.

G.L. c. 93H, §5. Applicability of other state and federal laws

Verbatim from the General Court of Massachusetts, G.L. c. 93H, §5 (route: Internet Archive id_ capture 2026-05-15).

Section 5. This chapter does not relieve a person or agency from the duty to comply with requirements of any applicable general or special law or federal law regarding the protection and privacy of personal information; provided however, a person who maintains procedures for responding to a breach of security pursuant to federal laws, rules, regulations, guidance, or guidelines, is deemed to be in compliance with this chapter if the person notifies affected Massachusetts residents in accordance with the maintained or required procedures when a breach occurs; provided further that the person also notifies the attorney general and the director of the office of consumer affairs and business regulation of the breach as soon as practicable and without unreasonable delay following the breach. The notice to be provided to the attorney general and the director of the office of consumer affairs and business regulation shall consist of, but not be limited to, any steps the person or agency has taken or plans to take relating to the breach pursuant to the applicable federal law, rule, regulation, guidance or guidelines; provided further that if said person or agency does not comply with applicable federal laws, rules, regulations, guidance or guidelines, then it shall be subject to the provisions of this chapter.

G.L. c. 93H, §6. Enforcement of chapter

Verbatim from the General Court of Massachusetts, G.L. c. 93H, §6 (route: Internet Archive id_ capture 2026-04-29).

Section 6. The attorney general may bring an action pursuant to section 4 of chapter 93A against a person or otherwise to remedy violations of this chapter and for other relief that may be appropriate.

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