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Cyber Liability by state

Montana data breach notification law and cyber insurance

Direct answer

What is Montana's data breach notification law?

Montana's breach notification law (Mont. Code sect. 30-14-1704) requires businesses to notify affected residents without unreasonable delay after a breach of personal information. Montana requires businesses to notify affected residents of breaches of unencrypted personal information without unreasonable delay, and to file a copy of the notice with the Attorney General.

Reviewed by Cornerstone Staff28 years of financial services state licensing experienceLast verified July 29, 2026

What the statute requires

Montana requires businesses to notify affected residents of breaches of unencrypted personal information without unreasonable delay, and to file a copy of the notice with the Attorney General. Cyber liability insurance typically covers the forensics, notification, and legal review this statute requires.

Consumer notification deadline
Without unreasonable delay
Regulator notice
Provide a copy of the consumer notice to the Montana Attorney General's Consumer Protection Office simultaneously with notifying residents.
Safe harbor
Notification is not required if the compromised data was encrypted and the encryption key was not acquired.
Enforcement
Violations are enforceable by the Attorney General under the state's consumer protection authority.

Statutes and sources

  • Montana Breach Notification Law

    Mont. Code sect. 30-14-1704

Regulator: Montana Department of Justice . Last verified 2026-07-29 from the official source .

Related Montana compliance pages

Insurance

Montana workers' compensation

Licensing and bonds

Montana licensing, bond, and regulator directory

Cyber Liability in other states

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