Democrats on the Senate Homeland Security Committee say the reported use of Signal and Gmail by national security officials creates major cybersecurity risks.

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

National Security Advisor Michael Waltz and a senior aide used personal Gmail accounts for government communications, ...

Even less secure than the Russian-compromised Signal app, Mike Waltz and his team are reportedly using personal Gmail ...

Last week, National Security Advisor Michael Waltz inadvertently invited a journalist to a Signal chat discussing a planned ...

Senior members of the Trump administration’s National Security Council — including its top national security adviser, Michael ...

The White House is clapping back against media reports claiming intel officials have been using the end-to-end encrypted ...

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

Intelligence experts argue that despite its use of encryption, Signal is not an appropriate channel for discussing ... that ...