The complaints, obtained by CNBC, were filed by nonprofit law firm Whistleblower Aid, which is representing Twitter's former head of security, Peiter "Mudge" Zatko.
Whistleblower Aid, which also represented Facebook whistleblower Frances Haugen, verified the authenticity of the documents with CNBC.
A Twitter whistleblower is alleging "extreme, egregious deficiencies by Twitter" related to privacy, security and content moderation, according to complaints filed with the Securities and Exchange Commission, Federal Trade Commission and Department of Justice.
If government regulators were to find Twitter misled consumers about its security protocols, that may be considered a violation of its 2011 agreement with the FTC.
At the time, Twitter was barred for 20 years from misleading consumers about how it protects their security and private information.