President Trump suggested Wednesday that the encrypted Signal messaging platform his top national security brass used to plan ...

The White House has declared the controversy around a Signal chat for a military strike that inadvertently included a ...

The National Security Agency (NSA) has issued a critical warning to millions of iPhone and Android users regarding the ...

The national security adviser's use of the messaging app is under scrutiny after he mistakenly added a journalist to a ...

As fallout from a Trump administration group chat about a military attack in Yemen continues to unfold, some Democrats are ...

U.S. National Security Advisor Mike Waltz, who started the now-infamous group chat coordinating a U.S. attack against the ...

Secure messaging app Signal has been in the spotlight this week for national-security reasons, but companies can also learn lessons from the Trump administration’s misstep.

The fallout continues following Jeffrey Goldberg's report that top members of President Trump's national security team ...

U.S. security officials have reportedly been using their personal Gmail accounts to conduct government business — including ...

Political fallout is mounting as some Republicans are breaking with the White House on the severity of the leak.

The Trump administration is still monitoring the fallout from the disclosure of attack plans, as a watchdog inquiry looms.

As senior officials deny wrongdoing, rank-and-file national-security personnel worry about the dangers if no one is held ...