Clustered 5 filings across 3 jurisdictions · filing window Sep 30, 2021 → Dec 29, 2021. View entity profile → Other incidents for this victim →
incident inc_aba20a9569824c59 · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
ME MT SC
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.
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 14, 2021
When the intrusion reportedly occurred, per the linked filings
Aug 14, 2021
Reported by MAINE AG, SOUTH CAROLINA AG filings
SI Group, a chemical manufacturing company, reported a data breach affecting 4 Maine residents. The breach, discovered on August 14, 2021, involved an external system hack that exposed individuals' names and Social Security numbers. The company offered 24 months of credit monitoring and identity theft protection services through Equifax to those affected.
SI Group Inc. experienced a security breach on August 14, 2021, which was discovered the same day. The breach was a result of an external system hack. Information compromised included names and driver's license or non-driver identification card numbers. A total of 7 Maine residents were affected out of 7,241 individuals impacted overall. Affected individuals were notified on December 30, 2021, and were offered 24 months of credit and dark web monitoring services through Equifax.
Affected (this filing): 7
SI Group, Inc. disclosed a ransomware attack occurring between August 9 and 14, 2021. The threat actor infiltrated systems, encrypted data, and exfiltrated files containing personal information of employees, contractors, and beneficiaries. Affected data included names, addresses, dates of birth, SSNs, driver's license numbers, passport numbers, and health/insurance information. SI Group isolated networks, engaged forensic experts, and notified federal law enforcement. Affected individuals were offered two years of complimentary credit monitoring and identity theft protection through Equifax.
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.
Affected (this filing): 4
SI Group, Inc. reported a data breach to the Montana Attorney General. The breach was reported on 2021-10-26. The breach occurred from 8/9/2021 to 8/14/2021. 4 Montana residents were affected.
Affected (this filing): 4
SI Group, Inc. experienced an external system breach on August 14, 2021, the same day it was discovered. The breach compromised names and Social Security numbers. The company notified 3 affected Maine residents, as part of a total of 3,254 individuals impacted. SI Group, Inc. offered 24 months of credit monitoring services through Equifax.
Affected (this filing): 3