It’s a more extensive use of the app than previously reported and sheds new light on how commonly the Trump administration’s national security team relies on Signal.

The team led by U.S. 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,

Amid the backlash to the Trump administration’s use of the private messaging app Signal for sensitive U.S. military planning in Yemen, Politico reported Wednesday that national security adviser Mike Waltz’s team set up at least 20 such chats.

The inquiry will examine whether the Pentagon chief violated the agency’s standards for sharing classified information.

The senior Republican and Democrat on the Senate Armed Services committee requested the probe after Hegseth disclosed sensitive on Signal.

The Pentagon’s acting inspector general has announced that he will review Defense Secretary Pete Hegseth’s use of the Signal messaging app to convey plans for a military strike against Houthi militant

The Pentagon's Inspector General's office announced on Thursday it was opening a probe into Defense Secretary Pete Hegseth's use of an unclassified commercial texting application to coordinate the March 15 launch of U.

Defence chief Pete Hegseth and others coordinated March 15 US military strikes in messaging app conversation that included journalist.

The Pentagon’s acting inspector general announced Thursday that he would review Defense Secretary Pete Hegseth’s use of the Signal messaging app to convey plans for a military strike against Houthi militants in Yemen.

The Defense Department inspector general has opened an investigation into Defense Secretary Pete Hegseth’s reported use of Signal to discuss U.S. attack plans against the Houthis.

The announcement comes after lawmakers voiced concern about whether top national security officials discussed classified information on Signal about a military strike against Houthi rebels in Yemen.

The Defense Inspector General's Office will look into whether the defense secretary improperly shared sensitive information on the commercial app.