Situation Report: Heightened Threat Environment – Potential Retaliation by Iranian Threat Actors Following U.S. Strikes on Iran (Updated June 4, 2026)

(TLP:AMBER+STRICT) Geopolitical tensions between the U.S. and Iran remain extremely acute. Despite media reporting that negotiations remain ongoing and the U.S. side saying a deal is close, Iran’s foreign minister said yesterday that “no tangible progress” has been made in negotiations to end the conflict. Amid this continuing uncertainty between war and peace, kinetic activity between the U.S. and Iran has increased over the past week.

Cyber Risk

WaterISAC is aware of widespread activity in Region 8 (and perhaps beyond) regarding recent Iranian APT cyber activity. Yesterday, a member utility was notified by CISA of attempted access activity linked to a known Iranian threat actor…