Company Data Breaches and Security Incidents

Search incidents by company, country, industry, year and attack method. Review affected data, impact, verification status, company responses and sources.

382 results
Investigating

Madera Community Hospital: files may have been acquired after network intrusion

Possible data leak: An unauthorised party accessed the network for two days in late May 2025; the hospital believes files were acquired from part of the network but found no definitive proof that files with personal or health information were taken.

Confirmed

TriWest Healthcare Alliance: information accessed and downloaded

Unauthorised activity was found on April 16, 2026; a person accessed and downloaded some TriWest information, which may have included names, DoD benefits numbers, ZIP codes and authorisation request types.

Confirmed

Yellow Corporation: files exfiltrated from network

Certain files on the network were accessed and exfiltrated without permission on March 27, 2025; most of the information relates to former employees.

Confirmed

Hausfeld: files accessed and/or acquired

An unknown unauthorised actor accessed certain systems between January 23 and February 20, 2025 and accessed and/or acquired files.

Confirmed

AgelessRx: help-desk tickets accessed

Between April 17 and 22, 2026, an unauthorised actor accessed certain help-desk tickets that contained users’ information.

Confirmed

First Advantage: employee inbox downloaded after phishing

A Drug & Occupational Health Screening Unit employee’s account was compromised by sophisticated phishing around November 13, 2025, and the inbox contents were downloaded.

Investigating

Alcott HR: personal data may have been accessed

After unusual activity in February 2025, Alcott found an unauthorised user accessed systems storing personal data; a review completed March 2026 found names, SSNs and dates of birth may have been accessed.