US warns of looming Iranian cyber threat to US networks and extremist violence after strikes

The US Department of Homeland Security (DHS) issued a National Terrorism Advisory System (NTAS) bulletin on Sunday (June 22) warning of a heightened threat environment within the United States due to the ongoing Iran-Israel conflict and increasing anti-US sentiment in the region.

The bulletin, effective through September 22, 2025, highlights a growing concern over both cyber and physical attacks, particularly from Iranian-linked actors and ideologically motivated extremists operating domestically.