All Breaches
May 7, 2021 Verified Energy / Refined Petroleum Pipeline

Colonial Pipeline Data Breach

In May 2021, Colonial Pipeline Company, operator of the largest refined oil pipeline system in the United States supplying roughly 45% of East Coast fuel, was compromised by the DarkSide ransomware gang.

5.8 Thousand
Reported Records
6
Data Types
Low
Severity
Oct 20, 2026
Last updated

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Exposed Data Types

1 sensitive6
  • Health insurance details
  • Names and surnames
  • Social Security numbers (SSN)
  • Military ID numbers
  • Tax and banking records
  • Corporate employment records

About This Breach

The threat actors gained initial entry using compromised legacy VPN credentials. The resulting operational disruption forced the company to shut down its entire 5,500-mile pipeline system for several days, prompting a federal regional state of emergency. Approximately 5,800 current and former employees and contractors had personal data exfiltrated, including Social Security numbers, military IDs, and tax documents.

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