Former National Security Advisor Mike Waltz faced scrutiny over a Signal chat incident during his U.N. ambassador hearing ...

Signal chat flouted rules on classified intel, say former defense officials. Rep. Raja Krishnamoorthi (D-Illinois) points to military attack plans that Defense Secretary Pete Hegseth shared on an ...

Mike Waltz, Trump's former national security adviser, faced questions from Democrats on the Signal chat controversy Tuesday ...

Former national security adviser Mike Waltz, removed from office amid the Signal chat controversy, spent Tuesday in the ...

If you hadn’t heard of Signal before Monday, chances are you have now. The secure messaging app, available for iPhones and Android devices, has long been popular with journalists because of its ...

Michael Waltz, the former national security adviser, doubled down on the Trump administration’s defense of a Signal group ...

FBI Director Kash Patel was not part of a Signal chat in which other Trump administration national security officials discussed detailed attack plans, but that didn’t spare him from being ...

Signal’s encryption protocol is open source, meaning that it’s freely available for anyone to inspect, use or modify. The encryption protocol is also used by another popular chat service ...

WASHINGTON — The Atlantic on Wednesday released the entire Signal chat among senior national security officials, showing that Defense Secretary Pete Hegseth provided the exact timings of ...

If you hadn’t heard of Signal before Monday, chances are you have now. The secure messaging app, available for iPhones and Android devices, has long been popular with journalists because of its ...