The United States Department of Homeland Security (DHS) issued a threat summary in a National Terrorism Advisory System Bulletin Sunday following Saturday's strikes on three key-nuclear facilities in Iran. "The ongoing Iran conflict is causing a heightened threat environment in the United States," the DHS statement said. DHS also said, "low-level cyber attacks against US networks by pro-Iranian hacktivists are likely, and cyber actors affiliated with the Iranian government may conduct attacks against US networks."