MS HB583

Requires any person conducting business in Mississippi who owns or maintains personal information of state residents to notify affected individuals of security breaches without unreasonable delay.

Defines "personal information" as an individual's name combined with social security number, driver's license number, state ID number, or financial account number with security code.

Allows notification delay if law enforcement determines it would impede a criminal investigation or national security, with notification required once law enforcement clears it.

Permits notification through written notice, telephone, electronic notice, or substitute notice (email, website posting, and media notification) if costs exceed $5,000 or affecting over 5,000 individuals.

Establishes that failure to comply constitutes an unfair trade practice enforceable by the Attorney General, with no private right of action created; effective July 1, 2011.