One linked filing — more sources may join as they report · filed Sep 1, 2021. View entity profile → Other incidents for this victim →
incident inc_fe7021f2974b4d38 · merge_method deterministic
Discovered → first regulatory filing
Not recorded for this incident
Discovery variance · Leak precedence · Materiality delta · SEC filing delay · Filing span — no leak-site claim in this cluster; no SEC 8-K in this cluster; needs two dated filings.
Identity (basic) · Government ID · Health (basic)
CA
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Jul 12, 2021 → Jul 13, 2021
When the intrusion reportedly occurred, per the linked filings
Jul 13, 2021
Reported by CALIFORNIA AG filing
DuPage Medical Group, Ltd. reported a security incident occurring July 12-13, 2021, where unauthorized actors accessed the network. Patient information, including names, addresses, DOBs, diagnosis codes, and SSNs for a subset, was impacted. DMG engaged forensic specialists, notified law enforcement, and offered 12 months of Equifax credit monitoring. The incident status is contained.
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.