Breaches and incidents
Buchalter LLP (law firm): breach exposes Arrowhead Regional Medical Center patient data
Per HIPAA Journal, Buchalter discovered on 28 Aug 2026 that “limited data was accessed by an unauthorized third party”, confirmed on 4 Sep 2026 that some...
- Disclosed
- Verification
- Reported by a reputable outlet, citing the company
What happened
- Per HIPAA Journal, Buchalter discovered on 28 Aug 2026 that “limited data was accessed by an unauthorized third party”, confirmed on 4 Sep 2026 that some Arrowhead Regional Medical Center (Colton, California) patients were affected, and obtained contact details on 21 Sep 2026 to mail letters.
- Root cause: not disclosed.
- No attacker named.
- Buchalter says it improved data security; the count was not disclosed.