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The Grid Is Being Watched. The Ceasefire Is Being Tested. And Half the Country Is on Weather Alert.
Description
Today’s EM Morning Brief leads with a joint advisory from CISA, the FBI, NSA, EPA, DOE, and U.S. Cyber Command warning that Iranian-affiliated cyber actors are actively exploiting programmable logic controllers across U.S. water, energy, and government systems. Advisory AA26-097A documents confirmed operational disruptions and financial losses. NERC is actively monitoring the electric grid in response. A fragile two-week ceasefire between the United States and Iran — brokered by Pakistan on April 7–8 — remains under pressure as President Trump keeps military assets in position and a dispute over Lebanon’s inclusion threatens the agreement’s scope.
On the weather front, Hawaii is experiencing its third consecutive major flooding event in three weeks, with a statewide Flood Watch in effect through Friday. Florida’s East Coast is under a Flash Flood Watch and Wind Advisory with dangerous surf conditions. Active fire weather is affecting South Carolina and Georgia. In Colorado, two wildfires near Boulder and Berthoud were both contained April 8 with no structures lost. FEMA officially designated 15 Tennessee counties as disaster areas following Winter Storm Fern. A boil water notice is active in Petal, Mississippi.
All 50 states and U.S. territories are covered.
Takeaways:
* Operators of Rockwell Automation/Allen-Bradley CompactLogix and Micro850 PLCs should restrict internet-facing access, apply available patches, and report suspicious activity to CISA or the FBI without delay.
* The domestic cyber threat posture remains elevated. The U.S.-Iran ceasefire is active but unsettled — monitor developments and lower thresholds for reporting suspicious cyber and physical security activity.
* Hawaii emergency managers should anticipate continued flooding, road closures, and potential landslides through Friday as a third consecutive storm stresses response resources statewide.
* Fire weather conditions in South Carolina and Georgia remain dangerous. Confirm current red flag and burn restriction status with state forestry commissions before authorizing any outdoor burning.
* Tennessee jurisdictions in the 15 designated counties should begin documenting eligible costs for FEMA Public Assistance. Individual Assistance determination is still pending federal review.
Sources
CISA
• CISA / Federal Agencies Issue Advisory on Iran-Related Cyberattacks — ABA Banking Journal
• Iran-Linked Hackers Target Water, Energy in US — Cybersecurity Dive
• Iranian Hackers Targeting American Critical Infrastructure — TechCrunch
DHS / NTAS
NERC / Energy Grid
US-Iran Conflict