Signal Messenger LLC, developer of the privacy-focused Signal messaging app, revealed on its government communication page that it had received a grand jury subpoena ordering the disclosure of “all customer or subscriber account information” on 37 users. Forced to comply, Signal disclosed that it only possessed responsive information on 6 of the 37 accounts, with available data being limited to account creation dates, according to documents published by the company.
According to court documents, the subpoena was issued by the United States District Court for the District of Columbia in July 2025. It was initially accompanied by a nondisclosure order, preventing Signal from disclosing the subpoena’s existence. Following legal efforts by the American Civil Liberties Union (ACLU), which represented Signal, the order was later modified to allow disclosure.
Commenting on the subpoena, Signal stated: “We simply don’t have access to things like messages, calls, profile information, group information, contacts, stories, call logs, and many other kinds of content and metadata, and we cannot share data in response to valid legal requests that we never had in the first place.”
Documents published by Signal included a single page listing six redacted accounts, with responsive information limited to account creation dates.
In 2024, Signal also disclosed that it had received search warrants from Santa Clara County seeking information on nine users. Data provided in response was similarly limited, consisting only of account creation dates and most recent login dates.
