The U.S. Department of Homeland Security (DHS) issued a formal terrorism advisory bulletin Sunday warning of a “heightened threat environment” in the United States following U.S. airstrikes on three Iranian nuclear facilities over the weekend.
The bulletin, released through the National Terrorism Advisory System (NTAS), outlines growing concerns over cyberattacks, retaliatory violence, and threats inspired by extremist ideologies amid escalating global tensions.
Threat Summary
According to the June 22 NTAS Bulletin, the U.S. government has identified several key threat vectors arising from the Iran conflict:
- Pro-Iranian hacktivists and cyber actors affiliated with the Iranian government may launch low-level or disruptive cyberattacks against U.S. networks.
- Iran maintains a longstanding commitment to retaliate against U.S. government officials involved in the 2020 killing of Iranian General Qassem Soleimani.
- The likelihood of U.S.-based violent extremists being inspired to act could increase significantly if Iranian leadership were to issue a religious ruling encouraging violence in the Homeland.
- Multiple recent attacks in the U.S. have been motivated by anti-Semitic and anti-Israel sentiments. DHS warns that the conflict could inspire new plots against Jewish, pro-Israel, or government-linked targets.
Issued Timeline
Issued: June 22, 2025
Expires: September 22, 2025 at 11:59 PM ET
Additional Intelligence and Risks
- DHS reports ongoing targeting of poorly secured U.S. internet-connected systems by both hacktivist groups and Iranian state-linked actors.
- Since 2020, U.S. law enforcement has disrupted multiple Iranian-backed plots, including assassination attempts on dissidents and critics of Tehran’s regime based in the United States.
- The bulletin highlights recent media releases from foreign terrorist organizations (FTOs), including Hamas, Hezbollah, the Houthis, and the Popular Front for the Liberation of Palestine, some of which are calling for violence against U.S. personnel in the Middle East.
- The domestic threat environment could be further destabilized by hate crime perpetrators targeting perceived Jewish or pro-Israel communities.
Federal, state, and local law enforcement agencies are advised to remain on high alert, and the DHS urges the public to stay vigilant and report suspicious behavior to local authorities.
⚠️ This is a breaking news story. It will be updated as more information becomes available.