While Donald Trump has said that he wants to increase electronic surveillance of American citizens’ and non-citizens’ electronic communications, the new administration is making sure that no one can intercept their messages amongst themselves by using Signal, a free end-to-end encrypted messaging app.
Senior Trump administration aides communicating over encrypted messaging apps may be violating federal record-keeping laws. The Presidential Records Act requires staff to keep records of those conversations. By using Signal, all records are encrypted, then later deleted.
It’s not just in the White House. Aides close to the New York governor and the mayor and Obama administration staff also use the encrypted messaging app.
You can read more in an article by Zack Whittaker at https://goo.gl/2wnf63.