California State AG
Clustered 5 filings across 4 jurisdictions · filed Nov 22, 2021. View entity profile → Other incidents for this victim →
incident inc_fa585cafed044b2f · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
Time between earliest and latest filing
Not recorded for this incident
Leak precedence · Materiality delta · SEC filing delay — no leak-site claim in this cluster; no SEC 8-K in this cluster.
Government ID · Identity (basic) · PHI
CA MT OR WA
HHS OCR · State AG
per-filing reported counts
State AGs report only their own residents; bars show per-filing counts.
Earliest sighting first · deep chronology in Litigation Timeline
Apr 19, 2021 → Apr 20, 2021
When the intrusion reportedly occurred, per the linked filings
Apr 19, 2021
Reported by WASHINGTON AG filing
Apr 20, 2021
Reported by CALIFORNIA AG filing
Oct 6, 2021
Reported by OREGON AG filing
One Community Health (Oregon) reported to HHS OCR on 2021-11-22 a Hacking/IT Incident affecting 39,865 individuals. A cybersecurity attack compromised PHI stored on a Network Server, including names, dates of birth, driver's license numbers, Social Security numbers, diagnoses, and other treatment information. The CE notified HHS, affected individuals, and the media, and implemented additional administrative and technical safeguards in response.
Affected (this filing): 39,865
One Community Health reported a data breach to the Montana Attorney General. The breach was reported on 2021-11-22. The breach occurred from 4/19/2021 to 4/20/2021. 19 Montana residents were affected.
Affected (this filing): 19
About this clustering
DisclosureLens links filings into incidents through layered matchers: deterministic rules (same source document, multistate filings of one breach, tight-window same-victim pairs), a weighted-similarity scorer for cross-source candidates, and an operator review queue for everything uncertain. Each link records its own method and confidence — shown per filing in the timeline below. The system defaults to NOT merging when uncertain, because a false merge (collapsing two unrelated breaches) is more harmful than a false split (showing related filings separately); uncertain pairs route to human review instead of auto-merging. Filing summaries shown in the timeline are AI-generated extracts — verify each against its linked source.
One Community Health experienced a ransomware attack between April 19-20, 2021. The incident resulted in the exfiltration of patient data, including Social Security numbers, names, dates of birth, addresses, and health information. The organization isolated affected systems, engaged cybersecurity experts, and offered one year of credit monitoring to affected individuals. No identity fraud was reported.
One Community Health, a health sector entity reported a ransomware incident to the Washington Attorney General. The organization became aware of the incident on 2021-04-19 and filed notice on 2021-11-22. 7,945 Washington residents were affected. 217 days elapsed between awareness and notification. 0 days to identify the breach. 1 days to contain the breach.
Affected (this filing): 7,945
One Community Health reported a data breach to the Oregon Attorney General. The breach was reported on 2021-11-22. The breach occurred during 4/19/2021 - 4/20/2021. The breach was discovered on 10/6/2021. 39,865 individuals were affected. Notice was sent on 11/22/2021.
Affected (this filing): 39,865