HackingTransportation & LogisticsTransportationData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDFinancial accountPHIHealth (basic)BiometricEmploymentMediumContained

STS Aviation Group

bd_c601d1f020d03856 · schema v1 · pii pii-v2

Severity

Medium

Discovered

Sep 12, 2025

Filed

Oct 19, 2026

To disclose

13 months

Affected

Not disclosed

Linked

4 filings

Confidence

68%

Full breach record for STS Aviation Group →2 incidents on file

STS Aviation Group notified individuals of a cybersecurity incident where unauthorized access occurred on August 5, 2025, and was discovered on September 12, 2025. The breach exposed personal information including names, contact details, government IDs (SSN, driver's license), financial account data, medical/health insurance info, fingerprints, and employment records. The company engaged external cybersecurity experts, blocked access, and offered two years of identity protection.

J jump to incidentP pin to compareR raw source

California clockDiscovered Sep 12, 2025 → Notified Oct 19, 2026402d ✗ CA 60-day late13 months discovery → filing

Incident timeline

undetected · 38 days

discovery → filing · 13 months / 402 days

Aug 5, 2025

Begins

Sep 12, 2025

Discovered

Oct 19, 2026

Filed

This filing is one of 4 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Vermont State AGbd_84533667133806842026-10-19Verified
Texas State AGbd_7750de52980353202026-10-20 · +1dVerified
Massachusetts State AGbd_09b80bed28db6e1b2026-10-01 · +18dVerified

Name: STS Aviation Group
norm: sts aviation
Domain: stsaviationgroup.com

Name: STS Aviation Group
norm: sts aviation
Domain: stsaviationgroup.com
Industry: Transportation & Logisticsllm

Discovered: Sep 12, 2025
Breach occurred: Aug 5, 2025
Undetected for: 38 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 19, 2026
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial accountPHIHealth (basic)BiometricEmployment
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Reported the issue to law enforcement authorities

During the incident: Launched an investigation with the assistance of leading external cybersecurity experts
Blocked the unauthorized party’s access to our systems
Took additional steps to enhance our safeguards
Reported the issue to law enforcement authorities
Changes made: Offered identity protection and credit monitoring services for two years at no cost
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 13 months(402 days from discovery to filing)
Compliance flags: CA 60-day late · 402d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Sep 12, 2025
→ Notified: Oct 19, 2026
402d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Sep 12, 2025 → Notified: Oct 19, 2026	402d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Massachusetts State AGOct 1 · first

Vermont State AG+18d

California State AG+18d · this page

Texas State AG+19d

Pattern: first filing Oct 1 (MA), last Oct 20 (TX) — a 19-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://oag.ca.gov/ecrime/databreach/reports/sb24-631565
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 19, 2026
Raw hash: 282540e13cc4dd9cf55d3c780119050781b346c683218328dafd8fe557f0462e

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entitySTS Aviation Group

Victim entitySTS Aviation Group

Incidentdiscovered Sep 12, 2025

Stated responseLaunched an investigation with the assistance of leading external cybersecurity experts

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov