Cybersecurity Briefing — Colonial Pipeline ransomware attack disrupts U.S. fuel supply
On 7 May 2021 ransomware operators compromised Colonial Pipeline’s IT network, prompting a shutdown of fuel deliveries across the U.S. East Coast and federal emergency waivers.
Colonial Pipeline reported a ransomware intrusion on 7 May 2021 that led to a precautionary shutdown of pipeline operations supplying nearly half of East Coast fuel. The incident drew a federal emergency declaration and highlighted OT/IT segmentation weaknesses.
Security teams should review ransomware playbooks, test OT isolation, mandate MFA for remote access, and ensure incident response contracts and insurance cover operational disruption.
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