Clustered 2 filings across 1 jurisdiction · filed Jul 17, 2012. View entity profile → Other incidents for this victim →
incident inc_50eebc1589f04009 · merge_method deterministic · confidence 90%
Discovered → first regulatory filing
Range of discovered_at dates across filings
Identity (basic) · Government ID · Health (basic)
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.
CA
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
May 10, 2012 → May 14, 2012
When the intrusion reportedly occurred, per the linked filings
May 18, 2012
Reported by CALIFORNIA AG filings
Hamner Square Dental, a dental practice in Corona, CA, reported the loss of an unencrypted USB memory chip containing patient data (names, SSNs, driver's license numbers, dental/insurance info). The chip was sent by third-party vendor Patterson Dental during a software upgrade. The incident occurred between May 10 and May 14, 2012. No fraud was reported, but patients were notified and offered credit monitoring guidance.
River Arch Dental and Hamner Square Dental reported a data breach involving the loss of an unencrypted USB drive containing patient data (SSNs, DLs, PHI) during a software migration. The drive was lost in the mail by business partner Patterson Dental on May 14, 2012. Notification letters were sent to patients on July 16, 2012.
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.