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.

1169 results
Investigating

Nakabayashi REVEX: after site tampering, 3,631 inquiry records may have been exposed

Possible data leak: Noticed June 30, 2026; site stopped July 1; first notice July 2 (then stated no personal data held). On July 23 inquiry-form data was found stored; second notice July 24. Final report confirmed vulnerability abuse but no view/exfil traces. Separate from the ApplyNow incident.

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

Ainex: phishing-led mailbox intrusion leaked 373 email addresses

Unauthorized login to an employee mailbox/cloud on June 17, 2026; noticed via suspicious mail on June 24; first notice July 1. Second notice attributes it to phishing impersonating a business partner.

Confirmed

Edogawa City: SD card loss exposed personal data of 904 students

A junior-high teacher kept student personal data on a personal SD card and lost it on June 13, 2026; the city disclosed June 29. Scope is 904 students (some alumni FY2014–2025 and some current Year-3).

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.

Investigating

ELEC: user data may have leaked via Meruhaikun intrusion

Possible data leak: After Meruhaikun intrusion on June 16, 2026 affecting training mailers, ELEC disclosed June 25. Count/fields still under investigation. Address, phone and payment data not stored in that system. Vendor root to be linked later.