Democratic leaders of key House committees are reigniting calling for National Security Advisor Mike Waltz to step down.

The team led by U.S. President Donald Trump's national security adviser, Mike Waltz, set up at least 20 group chats on the ...

A dozen current and former officials confirmed that the encrypted messaging app is used across various agencies — despite ...

The latest revelation once again put the security practices of top US security officials into question following the Signal ...

Four sources tell Politico they were aware of at least 20 chat groups, all four confirmed sensitive information was discussed ...

Instances where app users' privacy is compromised are likely to continue for the foreseeable future, which is why people ...