Every public data breach

44 disclosed this week · 26,355 on record

Colonial Pipeline

Disclosed May 7, 20215,810 affectedConfirmed

Official notice

DarkSide ransomware forces shutdown of largest US fuel pipeline

A DarkSide ransomware attack on Colonial Pipeline's systems led the company to halt pipeline operations in May 2021; it paid a ransom on May 8, and the US Justice Department later seized 63.7 bitcoins, about $2.3 million, of that payment.

What is known

People affected5,810 (as reported by the organization)
DisclosedMay 7, 2021
HappenedMay 6, 2021
AttackRansomware
Data exposedInternal documents
SectorEnergy · US
StatusConfirmed

Sources

Notices filed

History of this record
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 5810by backfillSource
occurred2026-09-25
empty to 2021-05-06by backfillSource
Added2026-09-25
First recordedby seedSource

First seen 2026-09-25 (Research), confirmed by Research. Record counts are as reported. Not legal advice.

Everything about Colonial Pipeline