"The Intelligence Community Whistleblower Protection Act (ICWPA) of 1998 bans retaliation against federal employees for blowing the whistle on perceived wrongdoing and requires the inspector general to keep confidential the whistleblower’s name, but it does not prohibit anyone from actually identifying a whistleblower."
https://www.fedsmith.com/2019/12/10/whistleblower-expect-right-remain-anonymous/