Wisconsin Code § 601.953

Investigation of cybersecurity event
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(1) If a
licensee learns that a cybersecurity event involving the licensee’s
information systems or nonpublic information has or may have
occurred, the licensee, or an outside vendor or service provider
designated to act on behalf of the licensee, shall conduct a prompt
investigation that, at a minimum, includes all of the following:
(a) An assessment of the nature and scope of the cybersecurity event.
(b) The identification of any nonpublic information that was
or may have been involved in the cybersecurity event.
(c) The performance of reasonable measures to restore the security of the licensee’s information systems compromised in the
cybersecurity event and prevent additional unauthorized acquisition, release, or use of nonpublic information.
(2) If a licensee knows that a cybersecurity event has or may
have occurred in an information system maintained by a 3rdparty service provider, the licensee shall comply with sub. (1) or
make reasonable efforts to confirm and document that the 3rdparty service provider has either complied with sub. (1) or failed
to cooperate with the investigation under sub. (1).
(3) The licensee shall maintain records concerning a cybersecurity event for a period of at least 5 years starting from the date

of the cybersecurity event and shall produce the records upon demand of the commissioner.

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