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Sedgwick discloses data breach after TridentLocker ransomware attack

ID: e51b5f68-0c3a-5288-97a7-40b567230374

STIX ID: report--e51b5f68-0c3a-5288-97a7-40b567230374

Feed Name: Security Affairs

Threat Score
72/100

Date Published: 2026-01-05

Date Updated: 2026-04-22

Author: Pierluigi Paganini

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Sedgwick Government Solutions disclosed a cybersecurity incident after the TridentLocker ransomware group claimed to have exfiltrated 3.4GB of data on New Year’s Eve; Sedgwick says the breach impacted an isolated file transfer system, engaged external incident response, is notifying affected parties, and reports no evidence of access to claims management servers or broader Sedgwick systems.

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