Mississippi Data Breach Notification Law

The Mississippi data breach notification law tells residents only

Miss. Code § 75-24-29 runs to a few paragraphs. Its one notice duty runs to the people affected, without unreasonable delay, and it allows extra time if police ask for it or while the business works out how far the intrusion reached and gets its systems back ¹. No copy goes to a state regulator or to the credit bureaus.

A 2026 attempt to add Attorney General notice, Senate Bill 2128, died in committee on February 3, 2026 ². So the residents' letters remain the only notice this statute calls for.

Mississippi's harm exception

Notice is not needed if, after an appropriate investigation, the business reasonably determines the breach will not likely result in harm to the affected individuals ¹. Mississippi asks for no paperwork on that call. Write a short memo regardless, naming the records touched, the evidence reviewed and the reason misuse looks unlikely, because it is the first thing anyone will ask for if the call is challenged.

Records protected by encryption, or by another method that leaves them unreadable or unusable, sit outside the law ¹. Whether a stolen decryption key changes that is a question the text leaves open. One unusual entry on the identifier list: tribal ID numbers.

Enforcement in Mississippi: the Attorney General only

A missed notice is treated as an unfair trade practice, and the Attorney General brings those cases ¹. The section names no dollar penalty and states outright that it creates no private right of action. Service companies that merely store records for a client, a bookkeeping firm for example, must alert that client as soon as practicable.

Where a Mississippi business's real deadline may come from

With so little in the state statute, the real timetable for many Mississippi firms is set elsewhere:

• Out-of-state customers. A client living in Tennessee or a patient from Alabama carries that state's law along, deadline and all.
• The FTC. Under the Safeguards Rule, a tax office or car dealership that loses unencrypted records on 500 or more consumers owes the FTC a report within 30 days of discovery ³, and must keep a security plan in writing.
• Contracts and insurance. Client agreements and cyber policies can set their own reporting windows. Read them before an incident, not in the middle of one.

Practical steps after a Mississippi breach

The opening hours look the same in Mississippi as anywhere. If a cyber policy is in force, its claims number is the first call; a complaint at ic3.gov puts the FBI on notice; and nothing gets wiped or reinstalled while evidence still sits on the machines ⁴⁵⁷.

Then:

1. Have whoever runs your network, or an outside breach response team, cut off the intruder.
2. Map each affected person to a home state. Next door is stricter: Alabama sets a 45-day deadline, and Louisiana allows 60 days and wants its Attorney General told. The all-states breach chart fills in the others.
3. Get the Mississippi letters out quickly; "no fixed deadline" is not permission to wait.
4. Afterward, measure your controls against the security conditions carriers set before they write a policy.

Clinics carry a second clock: HIPAA caps patient notice at 60 calendar days from discovery ⁶, as our federal health breach rule explainer sets out.

What you have read is our summary of § 75-24-29, compared with the code on October 13, 2026, and not legal advice. A Mississippi attorney can tell you how it fits your facts.