; (2) that prohibits the disclosure of information relating to an allegation or series of allegations that could plausibly give rise to a valid claim of sex discrimination; and (3) relating to material that is not otherwise prohibited by law from being disclosed. (c) Defense In any action or proceeding to enforce a covered provision, a covered employee may raise as a defense the unenforceability of a covered provision of a nondisclosure agreement, as set forth in this section. (d) Confidentiality (1) In General Personally identifying information about a complainant covered employee that would otherwise be held confidential in accordance with a covered provision of a nondisclosure agreement shall not be made public, unless the complainant covered employee chooses to make that information public. (2) Unlawful retaliation A violation of the prohibition described in paragraph (1) may be considered evidence of unlawful retaliation against the complainant covered employee. . (b) Clerical amendment The table of sections at the beginning of such chapter is amended by inserting after the item relating to section 411 the following new item: 411A. Nondisclosure agreement unenforceable. .