You probably use text message, Facebook Messenger, WhatsApp, or even Instagram to chat with others. And while those messaging apps work fine, some still seek out alternatives that lean hard into a promise of security and privacy—like Signal.

US president defends key security official after journalist says he was added to group chat about air strikes.

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.

A majority of voters say holding a discussion of plans to attack the Houthis in Yemen on the messaging app Signal was wrong, according to a new poll. The Harvard CAPS/Harris poll found that

The Pentagon has issued a stark warning against the use of the encrypted messaging app Signal, raising concerns over cybersecurity lapses at the highest levels of government. This advisory comes in response to a troubling incident where top national security officials inadvertently exposed sensitive military plans during a private Signal chat.

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

WASHINGTON >> The team led by President Donald Trump’s national security adviser, Mike Waltz, set up at least 20 group chats on the commercial Signal app to coordinate official work on issues involving China,

The report indicates a far more extensive use of the Signal app by Trump's national security team than previously reported.