MalwareInformationGovernment IDIdentity (basic)MediumContained

SINCLAIR BROADCAST GROUP, INC.

bd_c59dd08e53a7306d · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 17, 2021

Filed

Mar 31, 2022

To disclose

24 weeks

Affected

2state residents only

Linked

5 filings

Confidence

66%

Full breach record for SINCLAIR BROADCAST GROUP, INC. →2 incidents on file

Sinclair Broadcast Group notified the NH Attorney General of a ransomware incident. Unauthorized activity occurred between June 23 and October 17, 2021. The breach affected 2 New Hampshire residents, exposing names and Social Security numbers. Notification letters were mailed on March 31, 2022, offering one year of identity monitoring.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >90d24 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 116 days

discovery → filing · 24 weeks / 165 days

Jun 23, 2021

Begins

Oct 17, 2021

Discovered

Mar 31, 2022

Filed

This filing is one of 5 about the same incident.View merged incident

A leak claim by macaw about this victim predates this filing by 166 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitemacawbd_ea6951a13a3d2bba2021-10-16 · +166dVerified by operator

Regulatory filings (3) · sorted by filing gap

Indiana State AGbd_c68968727458ced52022-03-24 · +7dVerified by operator
Massachusetts State AGbd_b8352dccaf15ea962021-12-16 · +105dVerified by operator
Illinois State AGbd_3e7ebe34761e492a2021-01-01 · +454dVerified by operator

Name: SINCLAIR BROADCAST GROUP, INC.
norm: sinclair broadcast
Domain: sinclairbroadcastgroup.com

Name: SINCLAIR BROADCAST GROUP, INC.
norm: sinclair broadcast
Domain: sinclairbroadcastgroup.com

Discovered: Oct 17, 2021
Breach occurred: Jun 23, 2021 – Oct 17, 2021
Undetected for: 116 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 31, 2022
Affected individuals: 2state-resident count only
Data types: Government IDIdentity (basic)
Data elements: Social Security number
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial

During the incident: Began an investigation
A cybersecurity firm was engaged
Notified law enforcement
Offering the New Hampshire residents a complimentary one-year subscription to identity monitoring services through IDX
Changes made: Implementing enhanced network monitoring tools
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 24 weeks(165 days from discovery to filing)
Compliance flags: Leak >90d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Illinois State AGJan 1 · first

Massachusetts State AG+349d

Indiana State AG+447d

New Hampshire State AG+454d · this page

Pattern: first filing Jan 1 (IL), last Mar 31 (NH) — a 454-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.

Source URL: https://mm.nh.gov/files/uploads/doj/remote-docs/sinclair-broadcast-group-20220331.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 31, 2022
Raw hash: 2e768f83e9cb811b25dd0bb4c390af21d6f1a57d2a96a0651996aa9747824bdb

Linked disclosures

Ransomware claims (1)

Regulatory filings (3) · sorted by filing gap

Reporting entitySINCLAIR BROADCAST GROUP, INC.

Victim entitySINCLAIR BROADCAST GROUP, INC.

Incidentdiscovered Oct 17, 2021

Stated responseBegan an investigation

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov