Overview

• The Pentagon Inspector General has launched an investigation into Defense Secretary Pete Hegseth's use of the Signal messaging app following a security breach.
• The probe will assess whether Hegseth and other officials adhered to policies on using commercial messaging apps for official purposes and document retention requirements.
• The breach occurred when journalist Jeffrey Goldberg of The Atlantic was mistakenly added to a Signal group chat discussing U.S. military strikes in Yemen.
• Bipartisan leaders of the Senate Armed Services Committee requested the investigation, reflecting concerns about the administration's handling of classified information.
• President Donald Trump has defended Hegseth, stating he is not responsible for the breach, while a federal judge has ordered the preservation of related Signal messages.