🦞Maine State AG
Clustered 5 filings across 4 jurisdictions · filing window Oct 23, 2020 → Dec 23, 2020. View entity profile → Other incidents for this victim →
incident inc_840272e1bc3f41b5 · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
Identity (basic) · Financial account
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 ME MT OR
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
Aug 3, 2020
When the intrusion reportedly occurred, per the linked filings
Aug 5, 2020
Reported by MAINE AG, OREGON AG, CALIFORNIA AG filings
Ultra Clean Holdings, Inc. reported an external system breach (hacking) occurring on August 3, 2020, discovered on August 5, 2020. The incident affected 6,060 individuals nationwide, including 127 Maine residents. Compromised data included names/personal identifiers combined with financial account or credit/debit card numbers. Notification was sent on October 23, 2020, offering two years of credit monitoring via Experian.
Affected (this filing): 6,060
Ultra Clean Holdings, Inc. (UCT) notified California regulators of a phishing incident occurring August 3-4, 2020, discovered August 5, 2020. Attackers obtained personal information including names, addresses, and government IDs. UCT provided two years of Experian IdentityWorks monitoring. The attacker is a sophisticated criminal enterprise seeking extortion.
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.
Ultra Clean Holdings, Inc. reported an external system breach (hacking) occurring on August 3, 2020, discovered on August 5, 2020. The incident affected 5,449 individuals, including 36 Maine residents. Stolen data included names and financial account or credit/debit card numbers (with security codes/PINs). The company provided written notification on October 23, 2020, and offered a complimentary two-year subscription to Experian’s IdentityWorks.
Affected (this filing): 5,449
Ultra Clean Holdings, Inc reported a data breach to the Montana Attorney General. The breach was reported on 2020-10-23. The breach occurred from 8/3/2020 to 8/4/2020. 1 Montana residents were affected.
Affected (this filing): 1
Ultra Clean Holdings, Inc. reported a data breach to the Oregon Attorney General. The breach was reported on 2020-11-10. The breach occurred during 8/3/2020 - 8/4/2020. The breach was discovered on 8/5/2020. 5,449 individuals were affected. Notice was sent on 11/9/2020.
Affected (this filing): 5,449