Altos Inc
ent_67be23fe52307fe7979079b5
Disclosures
11
HHS OCR · State AG · 4 jurisdictions
Multi-filing incidents
1
incidents joining 2+ filings here
Max affected reported
15,956
nationwide · State AG IN
Leak-site claims
0
none in sample
Identity resolution
- Canonical name
- Altos Inc
- Normalized
- altos— dedupe via name-norm; Microsoft / MSFT collapse to one row
- GLEIF LEI
- No match
- SEC EDGAR CIK
- None — not an SEC registrant
- Domain
- None on record
Disclosure history (11)newest first
- CALIFORNIAHHS OCRas victim2025-08-11
Altos Inc, a Business Associate based in CA, reported to HHS on 2025-08-11 a Hacking/IT Incident affecting 1,634 individuals. Breached information was located on a Network Server. The PHI involved included clinical and demographic information. In response, the BA notified HHS and affected individuals, provided complimentary credit monitoring, and implemented additional administrative, technical, and security safeguards.
- CALIFORNIAHHS OCRas victim2025-08-11
Altos Inc reported to HHS on 2025-08-11 a Hacking/IT Incident affecting 6,414 individuals. Breached information located on Network Server. The breach involved PHI including clinical and demographic information. A business associate was present.
- CALIFORNIAHHS OCRas victim2025-08-11
Altos Inc reported to HHS on 2025-08-11 a Hacking/IT Incident affecting 2,366 individuals. Breached information located on Network Server. The breach involved protected health information (PHI) including clinical and demographic data. The business associate notified HHS and affected individuals, provided complimentary credit monitoring, and implemented additional administrative, technical, and security safeguards.
- CALIFORNIAHHS OCRas victim2025-08-11
Altos Inc reported to HHS on 2025-08-11 a Hacking/IT Incident affecting 2700 individuals. Breached information located on Network Server. The business associate's breach exposed protected health information (PHI) including clinical and demographic data. The BA notified HHS and affected individuals, provided complimentary credit monitoring, and implemented additional administrative, technical, and security safeguards.
- CALIFORNIAHHS OCRas victim2025-08-11
Altos Inc reported to HHS on 2025-08-11 a Hacking/IT Incident affecting 882 individuals. Breached information located on Network Server. The PHI involved included clinical and demographic information.
- CALIFORNIAHHS OCRas victim2025-08-11
Altos Inc reported to HHS on 2025-08-11 a Hacking/IT Incident affecting 1,011 individuals. Breached information located on Network Server. The breach involved PHI including clinical and demographic information. The business associate notified HHS and affected individuals, provided complimentary credit monitoring, and implemented additional administrative, technical, and security safeguards.
- CALIFORNIAHHS OCRas victim2025-08-11
Altos Inc reported to HHS on 2025-08-11 a Hacking/IT Incident affecting 1,520 individuals. Breached information located on Network Server. The breach involved PHI including clinical and demographic information. The business associate provided credit monitoring and implemented additional safeguards.
- California State AGas victim2025-08-01
Altos, a billing services provider for healthcare providers in southern California, experienced a data breach due to an internal system exposed to the Internet. The incident occurred between May 30 and May 31, 2025, and was discovered on June 17, 2025. An unauthorized third party accessed the system and may have exfiltrated personal and health information, including names, addresses, dates of birth, Social Security numbers, and health information. Altos blocked access to the system, hired a cybersecurity firm, and is offering credit monitoring to affected individuals.
- Nebraska State AGas victim2025-08-01
Altos Inc, a California billing services provider, notified Nebraska residents of a security incident where an internal system containing personal and health information was exposed to the Internet. The breach, discovered on June 17, 2025, and confirmed on July 21, 2025, may have exposed names, addresses, DOBs, SSNs, and health data. Altos engaged a cybersecurity firm, secured the system, and offered credit monitoring via Epiq.
- Massachusetts State AGas victim2025-08-01
Altos Inc reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-08-01. 9 Massachusetts residents were affected.
- Indiana State AGas victim2025-08-01
Altos Inc reported a data breach to the Indiana Attorney General. The breach occurred on 2025-05-30 and was reported on 2025-08-01. 7 Indiana residents were affected. 15,956 individuals affected in total.