🐻California State AG
Clustered 6 filings across 5 jurisdictions · filing window Feb 3, 2023 → Jun 26, 2023. View entity profile → Other incidents for this victim →
incident inc_0a1247e8b8654c3b · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
PHI · Health (basic) · Government ID
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 DE ME NH WA
all 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
Dec 13, 2022 → Dec 15, 2022
When the intrusion reportedly occurred, per the linked filings
Dec 15, 2022
Reported by CALIFORNIA AG, MAINE AG, WASHINGTON AG, DELAWARE AG, NEW HAMPSHIRE AG filings
Highmark Health reported a phishing incident where an employee's email account was compromised between Dec 13-15, 2022. The attacker accessed emails containing PHI and PII (name, SSN) of 696 NH residents. Highmark shut down the mailbox, reset passwords, and engaged forensic consultants. Notices were sent to affected individuals and regulators on Feb 13, 2023.
Affected (this filing): 696
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.
Highmark disclosed a cyber security incident where an employee clicked a malicious email link, leading to email account compromise between Dec 13-15, 2022. Protected health information (PHI), including names, SSNs (for some), and treatment info, was potentially accessed. Highmark shut down the mailbox, reset passwords, and offered 24 months of Experian IdentityWorks.
Healthcare organization Highmark reported an external system breach that occurred from December 13 to December 15, 2022. The breach was discovered on December 15, 2022, and affected 2,774 Maine residents, compromising their Social Security Numbers. Highmark offered affected individuals 24 months of complimentary credit monitoring and identity theft restoration services.
Affected (this filing): 2,774
Highmark, a health sector entity reported a phishing incident to the Washington Attorney General. The organization became aware of the incident on 2022-12-15 and filed notice on 2023-02-06. 1,980 Washington residents were affected. 53 days elapsed between awareness and notification. 2 days to identify the breach. 0 days to contain the breach.
Affected (this filing): 1,980
Highmark, Inc. disclosed a cybersecurity incident occurring between December 13-15, 2022, where an employee clicked a malicious phishing link, compromising their email account. The threat actor accessed emails containing Protected Health Information (PHI) and PII of Highmark members, including names, SSNs, member IDs, claims data, and financial account numbers. Highmark shut down the mailbox, reset passwords, and implemented network blocking. Affected individuals were offered 24 months of Experian IdentityWorks.
Highmark Health disclosed a cybersecurity incident discovered on December 15, 2022, involving a phishing email sent to an employee. The employee's email account was compromised between December 13 and 15, 2022. The threat actor accessed emails containing Protected Health Information (PHI) of Highmark members. Affected data includes names, SSNs, member IDs, claims/treatment info, financial account numbers, passwords, addresses, DOBs, and phone numbers. Highmark shut down the mailbox, reset passwords, implemented network blocking, and provided 24 months of Experian IdentityWorks.