HackingTechnologyInformationCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDMediumContained

ATSG, Inc

bd_b257a36e6d177134 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 5, 2024

Filed

Feb 25, 2025

To disclose

25 weeks

Affected

7state residents only

Linked

9 filings

Confidence

66%

Full breach record for ATSG, Inc →

ATSG, Inc. notified the Maryland AG of unauthorized access to its IT network identified on September 5, 2024. The incident may affect the personal information (names, SSNs, passport numbers, driver's license numbers) of approximately 7 Maryland residents. ATSG engaged outside cybersecurity professionals for investigation and is offering 12 months of credit monitoring to affected individuals.

J jump to incidentP pin to compareR raw source

Maryland clock✗ MD AG >90d25 weeks discovery → filing

⚠ occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Incident timeline

discovery → filing · 25 weeks / 173 days

Sep 5, 2024

Begins

Sep 5, 2024

Discovered

Feb 25, 2025

Filed

vs. sector median

+6 wks slower

This filing is one of 9 about the same incident.View merged incident

A leak claim by bianlian about this victim predates this filing by 172 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (2)

Leak Sitebianlianbd_100fd113149f5bff2024-11-09 · +107dVerified by operator
Leak Sitebianlianbd_8a1c957e302701ab2024-09-06 · +172dVerified by operator

Regulatory filings (6) · sorted by filing gap

New Hampshire State AGbd_1bf34451981ec1942025-02-25Verified by operator
Massachusetts State AGbd_af9e80106bed91992025-02-22 · +3dVerified by operator
Indiana State AGbd_5b9b58c33c22b70c2025-02-21 · +4dVerified by operator
Massachusetts State AGbd_0e8ceda8da1c00912024-10-05 · +143dVerified by operator

Show 2 more filings ↓up to 172d gap

HHS OCRbd_eb6e86fd349f9e632024-10-04 · +144dCandidate
Pressbianlianbd_c09996ad6c9c2a8e2024-09-06 · +172dCandidate

Name: MCDONALD HOPKINS LLC
norm: mcdonald hopkins

Name: ATSG, Inc
norm: atsg
Domain: atsg.net
Industry: Technologyllm

Discovered: Sep 5, 2024
Breach occurred: Sep 5, 2024
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Feb 21, 2025
Affected individuals: 7state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified Maryland Attorney General

During the incident: Launched an investigation in consultation with outside cybersecurity professionals
Providing the affected residents with written notification
Offering a complimentary 12-month membership of Equifax Complete Premier credit monitoring
Changes made: Continually evaluates and modifies its practices and internal controls to enhance the security and privacy of personal information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 25 weeks(173 days from discovery to filing)
Compliance flags: MD AG >90dLeak >90d
Discovery-date grounding: occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 5 states

View merged incident ↗

PressSep 6 · first

HHS OCR+28d

Massachusetts State AG+29d

Indiana State AG+168d

Massachusetts State AG+169d

New Hampshire State AG+172d

Maryland State AG+172d · this page

Pattern: first filing Sep 6, last Feb 25 (MD) — a 172-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.maryland.gov/resources-info/SBN%20Documents/2025/ITU-376486.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 25, 2025
Raw hash: 45c4ce6530161d853255c49c9172cfc4d6ef45ac31bd2ee4f3079317fb75abc1

Linked disclosures

Ransomware claims (2)

Regulatory filings (6) · sorted by filing gap

Reporting entityMCDONALD HOPKINS LLC

Victim entityATSG, Inc

Incidentdiscovered Sep 5, 2024

Stated responseLaunched an investigation in consultation with outside cybersecurity professionals

ComplianceMD AG >90d

Extraction provenanceno artifact recorded

Source provenanceoag.maryland.gov