DisclosureLens
MalwareManufacturingManufacturingRansomwareData ExfiltratedData EncryptedCustomer Data InvolvedEmployee Data InvolvedMulti-Stage ChainIdentity (basic)Government IDHealth (basic)MediumContained

SI Group, Inc.

bd_9167738a09cf5c9c · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 14, 2021

Filed

Dec 29, 2021

To disclose

20 weeks

Affected

353state residents only

Linked

10 filings

Confidence

64%
Full breach record for SI Group, Inc.

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.

Incident timeline

undetected · 5 days
discovery → filing · 20 weeks / 137 days

Aug 9, 2021

Begins

Aug 14, 2021

Discovered

Dec 29, 2021

Filed

This filing is one of 10 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (9) · sorted by filing gap

Show 5 more filingsup to 91d gap

Filing propagation · 10 filings · 6 states

View merged incident ↗

Pattern: first filing Sep 29 (IN), last Jan 11 (NH) — a 104-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.