HackingTechnologyInformationData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Ahtna Incorporated

bd_f23a1a2a204c96b5 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jul 28, 2025

Filed

Nov 21, 2025

To disclose

17 weeks

Affected

2state residents only

Linked

11 filings

Confidence

66%

Full breach record for Ahtna Incorporated →

Ahtna, Inc. notified the New Hampshire Attorney General of a data event affecting 2 NH residents. Unauthorized access occurred between April 20 and June 1, 2025. Ahtna discovered the breach on July 28, 2025, contained the network, engaged outside investigators, and notified federal law enforcement. Affected data included names and SSN/TIN. Affected individuals received 12 months of credit monitoring via Experian.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >90d17 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 · 99 days

discovery → filing · 17 weeks / 116 days

Apr 20, 2025

Begins

Jul 28, 2025

Discovered

Nov 21, 2025

Filed

vs. sector median

2 wks faster

This filing is one of 11 about the same incident.View merged incident

A leak claim by qilin about this victim predates this filing by 116 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (2)

Leak Siteqilinbd_d569bf6c1b98ae752025-08-12 · +101dVerified by operator
Leak Siteqilinbd_fdd9e411b4d479412025-07-28 · +116dVerified by operator

Regulatory filings (8) · sorted by filing gap

California State AGbd_12ccee8c9159108c2025-11-21Verified by operator
Maine State AGbd_2ff3c11d1751fbb22025-11-21Candidate
Indiana State AGbd_31c06274ced5bd372025-11-21Verified by operator
Vermont State AGbd_90c6835deaec47512025-11-21Verified by operator

Show 4 more filings ↓up to 91d gap

Nebraska State AGbd_bcad1e46b464e8b92025-11-21Verified by operator
Massachusetts State AGbd_cb0c23b4c2cd68a02025-11-21Verified by operator
California State AGbd_11bf1ab7ad30a6892026-02-19 · +90dVerified
Texas State AGbd_4e509ebc850ec1d92026-02-20 · +91dVerified by operator

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: Ahtna Incorporated
norm: ahtna
Domain: ahtna.com
Industry: Technologyllm

Discovered: Jul 28, 2025
Breach occurred: Apr 20, 2025 – Jun 1, 2025
Undetected for: 99 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 21, 2025
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: Notified federal law enforcement regarding the eventProviding written notice of this event to relevant state and federal regulators, as necessary, and to the three major credit reporting agencies
Initial access: exploit_public_facing

During the incident: Confirmed containment of the network environment
Initiated an investigation with the assistance of outside professionals
Notified federal law enforcement regarding the event
Provided access to credit monitoring services for twelve (12) months, through Experian
Provided impacted individuals with guidance on how to better protect against identity theft and fraud
Changes made: Reviewing its existing policies and procedures to help reduce the likelihood of a similar event occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 17 weeks(116 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 · 9 filings · 8 states

View merged incident ↗

California State AGNov 21 · first

Maine State AGNov 21 · first

Indiana State AGNov 21 · first

Vermont State AGNov 21 · first

Nebraska State AGNov 21 · first

Massachusetts State AGNov 21 · first

New Hampshire State AGNov 21 · first · this page

California State AG+90d

Texas State AG+91d

Pattern: first filing Nov 21 (CA), last Feb 20 (TX) — a 91-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/ahtna-20251121.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 21, 2025
Raw hash: 3cf0e02453aaed70b57af9ac0114932f227b325b8a71ef13b23714ae17c91ffd

Linked disclosures

Ransomware claims (2)

Regulatory filings (8) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityAhtna Incorporated

Incidentdiscovered Jul 28, 2025

Stated responseConfirmed containment of the network environment

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov