Altos Inc data breach (2025)

🐻California State AGFirst filinglinked via same-victim cross-source · 100%

Filed Aug 1, 2025bd_3f372da7fd54a53e

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.

🏎️Indiana State AGlinked via same-victim cross-source · 100%

Filed Aug 1, 2025bd_de689aaa60106ceb

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.

Affected (this filing): 15,956

CALIFORNIAHHS OCRlinked via same-victim cross-source · 100%

Filed Aug 11, 2025bd_56b1f270267296a0

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.

Affected (this filing): 2,366

HHS notified

CALIFORNIAHHS OCRlinked via same-victim cross-source · 100%

Filed Aug 11, 2025bd_60b51f79707513f4

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.

Affected (this filing): 2,700

HHS notified

CALIFORNIAHHS OCRlinked via same-victim cross-source · 100%

Filed Aug 11, 2025bd_92a4b394745af1bd

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.

Affected (this filing): 1,011

HHS notified

Altos Inc

Litigation Timing

Sensitive data

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