Miss. Code Ann. § 83-5-809: Investigation of cybersecurity event.

(1) If the licensee learns that a cybersecurity event has or may have occurred, then the licensee, or an outside vendor and/or service provider designated to act on behalf of the licensee, shall conduct a prompt investigation.

(2) During the investigation, the licensee, or an outside vendor and/or service provider designated to act on behalf of the licensee, shall, at a minimum, determine as much of the following information as possible:

(a) Determine whether a cybersecurity event has occurred;

(b) Assess the nature and scope of the cybersecurity event;

(c) Identify any nonpublic information that may have been involved in the cybersecurity event; and

(d) Perform or oversee reasonable measures to restore the security of the information systems compromised in the cybersecurity event in order to prevent further unauthorized acquisition, release or use of nonpublic information in the licensee’s possession, custody or control.

(3) If the licensee learns that a cybersecurity event has or may have occurred in a system maintained by a third-party service provider, the licensee will complete the steps listed in subsection (2) of this section or confirm and document that the third-party service provider has completed those steps.

(4) The licensee shall maintain records concerning all cybersecurity events for a period of at least five (5) years from the date of the cybersecurity event and shall produce those records upon demand of the commissioner.