https://stefanpfeiffer.blog/2020/07/06/the-only-signal-user-data-we-have-and-the-only-data-the-us-government-obtained-as-a-result-was-the-date-of-account-creation-and-the-date-of-last-use-messenger/
"The only #Signal user data we have, and the only data the US government obtained as a result, was the date of account creation and the date of last use" #Messenger