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AECOM Data Breach Investigation Underway Following Hacker Claims

AECOM Data Breach Investigation Underway Following Hacker Claims

First seen 18 Sep 2026, 00:27 UTC

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ThreatCluster AI
ThreatCluster September 18, 2026 at 02:00 UTC
  • AECOM may have suffered a data breach affecting 1.22 terabytes of data.
  • Hacker group Metaencryptor claims responsibility for the attack.
  • Class action lawsuit investigation is underway for affected individuals.

AECOM, a major infrastructure consulting firm, is under investigation for a potential data breach. Reports indicate that the hacker group Metaencryptor claimed responsibility for the attack, which allegedly compromised 1.22 terabytes of data. The breach is believed to have occurred on September 17, 2026, the same day the claims were made public on the dark web monitoring site Ransomware.live. No further details about the breach's scope or nature have been confirmed. AECOM is currently working to assess the situation, and attorneys are seeking information from individuals who may have been affected, including employees and clients. A class action lawsuit may be filed if sufficient evidence of data exposure is gathered. The investigation is ongoing, and affected individuals are encouraged to reach out for legal guidance.

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Timeline

2026-09-17
Metaencryptor claims AECOM data breach
The hacker group claimed responsibility for an attack on AECOM, reportedly affecting 1.22 terabytes of data.
Classaction
2026-09-17
Class action lawsuit investigation initiated
Attorneys began seeking information from individuals who may have been affected by the alleged breach.
Classaction

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