Home › Organisations › Episource, LLC Episource, LLC is a healthcare organisation in California. It appears on the HHS OCR breach portal, the Massachusetts Attorney General breach-notification register, the California Attorney General breach-notification register, the Washington State Attorney General breach-notification register and the Texas Attorney General breach-notification register with 3 confirmed incidents (4 filings); the most recent notice was filed on July 11, 2025.
Data as of September 12, 2026.
Disclosed July 11, 2025 Timeline July 11, 2025
Reported to regulator Regulator MA AG breach notification: 52 Massachusetts residents affected
source Litigation Possible litigation — multiple candidate dockets found, not yet resolved to a single case. What a Massachusetts notice means Governed by M.G.L. c. 93H . Notice to the Attorney General is required for a breach affecting any number of Massachusetts residents' personal information -- the statute sets no minimum count.
Note: the count is Massachusetts residents only, not a total.
Massachusetts breach-notification register ↗
Confirmed incident Filed in WA, CA and TX — Ransomware Attack The same incident was filed separately with 3 jurisdictions within a few days of each other (WA, CA and TX) — shown here as one incident.
Occurred January 27, 2025 Disclosed June 6, 2025 Records affected 6,725,572 Was I affected? →
Timeline June 6, 2025
Reported to regulator Regulator WA AG breach notification: 102,913 Washington residents affected
source June 6, 2025
Reported to regulator Regulator CA AG breach notification: an unknown number of California residents affected
source June 6, 2025
Reported to regulator Regulator HHS OCR breach portal listing: Hacking/IT Incident; Network Server
source July 11, 2025
Reported to regulator Regulator CA AG breach notification: an unknown number of California residents affected
source July 31, 2025
Reported to regulator Regulator CA AG breach notification: an unknown number of California residents affected
source August 22, 2025
Reported to regulator Regulator CA AG breach notification: an unknown number of California residents affected
source September 11, 2025
Reported to regulator Regulator CA AG breach notification: an unknown number of California residents affected
source September 22, 2025
Reported to regulator Regulator CA AG breach notification: an unknown number of California residents affected
source October 1, 2025
Reported to regulator Regulator CA AG breach notification: an unknown number of California residents affected
source October 15, 2025
Reported to regulator Regulator CA AG breach notification: an unknown number of California residents affected
source November 12, 2025
Reported to regulator Regulator CA AG breach notification: an unknown number of California residents affected
source February 9, 2026
Reported to regulator Regulator CA AG breach notification: an unknown number of California residents affected
source February 11, 2026
Reported to regulator Regulator TX AG breach notification: 351,562 Texas residents affected
source Litigation Possible litigation — multiple candidate dockets found, not yet resolved to a single case. Possible litigation — multiple candidate dockets found, not yet resolved to a single case. What a Washington notice means Governed by RCW 19.255.010 . Notice to the Attorney General is required when a breach affects more than 500 Washington residents.
Note: the count is Washington residents only, not a total.
Washington breach-notification register ↗
What a California notice means Governed by Cal. Civ. Code §1798.82 . A copy of the notification must be sent to the Attorney General when a single breach requires notifying more than 500 California residents.
Note: no affected-count is published on this register.
California breach-notification register ↗
What a Texas notice means Governed by Tex. Bus. & Com. Code §521.053 . Notice to the Attorney General is required when a breach affects at least 250 Texas residents.
Note: the published count is a total, not limited to Texas residents.
Texas breach-notification register ↗
Occurred February 19, 2023 Disclosed June 2, 2023 Timeline June 2, 2023
Reported to regulator Regulator CA AG breach notification: an unknown number of California residents affected
source