Clustered 5 filings across 3 jurisdictions · filing window Jun 10, 2022 → Jun 27, 2022. View entity profile → Other incidents for this victim →
incident inc_c0a215613f4c4205 · 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.
Identity (basic) · Government ID · Health (basic)
ME MT 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
Feb 25, 2020
When the intrusion reportedly occurred, per the linked filings
Mar 25, 2022
Reported by MAINE AG filings
MCG Health, LLC reported to HHS on 2022-06-10 a Hacking/IT Incident affecting 793,283 individuals. Breached information located on Network Server. Business Associate present.
Affected (this filing): 793,283
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.
MCG Health, LLC reported a data breach to the Montana Attorney General. The breach was reported on 2022-06-10. The breach occurred from 2/25/2020 to 2/26/2020. 9 Montana residents were affected.
Affected (this filing): 9
MCG Health, LLC, a healthcare business associate, disclosed a breach affecting 1,100,000 individuals. Unauthorized parties obtained patient/member data (SSNs, names, medical codes, PII) matching MCG's systems. The breach occurred around Feb 25-26, 2020, but was discovered March 25, 2022. MCG retained forensic investigators, coordinated with the FBI, and offers two years of Experian credit monitoring.
Affected (this filing): 1,100,000
MCG Health, a HIPAA business associate, discovered on March 25, 2022, that an unauthorized party had obtained personal and health information of its customers' patients and members. The data may have been acquired around February 25-26, 2020. The compromised information included names, Social Security numbers, medical codes, postal addresses, telephone numbers, email addresses, dates of birth, and gender. In response, MCG engaged a forensic investigation firm, notified the FBI, enhanced its system security, and offered two years of identity protection and credit monitoring services to the affected individuals.
Affected (this filing): 1
MCG Health, LLC reported a data breach to the Montana Attorney General. The breach was reported on 2022-06-27. The breach occurred on 3/25/2022. 9 Montana residents were affected.
Affected (this filing): 9