HackingProfessional ServicesProfessional ServicesMulti-Stage ChainData ExfiltratedIdentity (basic)Government IDMediumContained

Kiernan Trebach

bd_7b76d4db13b517c5 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 21, 2024

Filed

May 7, 2025

To disclose

28 weeks

Affected

1state residents only

Linked

4 filings

Confidence

66%

Full breach record for Kiernan Trebach →

Kiernan Trebach LLP reported an external system breach affecting one Maine resident. Unauthorized access occurred on three occasions between May 2023 and September 2024. The firm notified federal law enforcement and offered 12 months of credit monitoring.

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Maine clockDiscovered Oct 21, 2024 → Filed with AG May 7, 2025198d ✗ ME AG >90d28 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 · 536 days

discovery → filing · 28 weeks / 198 days

May 4, 2023

Begins

Oct 21, 2024

Discovered

May 7, 2025

Filed

vs. sector median

+10 wks slower

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

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Indiana State AGbd_20e2c2f3f38f13432025-05-07Candidate
New Hampshire State AGbd_26cc665cc7425bbf2025-05-07Verified
Massachusetts State AGbd_8164b8b8512cd9482025-05-07Verified

Name: Kiernan Trebach
norm: kiernan trebach
Domain: kiernantrebach.com

Name: Kiernan Trebach
norm: kiernan trebach
Domain: kiernantrebach.com
Industry: Professional Servicesllm

Discovered: Oct 21, 2024
Breach occurred: May 4, 2023 – Sep 24, 2024
Undetected for: 536 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 7, 2025
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Notified federal law enforcement
Initial access: exploit_public_facing

During the incident: Notified federal law enforcement regarding the event
Providing access to credit monitoring services for twelve (12) months, through Experian
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Changes made: Working to implement additional safeguards and training to its employees
Reviewing our policies, procedures, and processes related to the storage and access of personal information to reduce the likelihood of a similar future event
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 28 weeks(198 days from discovery to filing)
Compliance flags: ME AG >90d · 198dME resident >60d · 198d
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.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Oct 21, 2024
→ Filed with AG: May 7, 2025
198d 90 days ME AG >90d
Maine
Discovered: Oct 21, 2024
→ Notified: May 7, 2025
198d 60 days (analyst band; statutory cap is 30 days) ME resident >60d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Oct 21, 2024 → Filed with AG: May 7, 2025	198d	90 days	ME AG >90d
Maine	Discovered: Oct 21, 2024 → Notified: May 7, 2025	198d	60 days (analyst band; statutory cap is 30 days)	ME resident >60d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Indiana State AGMay 7 · first

New Hampshire State AGMay 7 · first

Massachusetts State AGMay 7 · first

Maine State AGMay 7 · first · this page

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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/6ea0bfd4-593a-4058-a978-ef4e456b116a.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 7, 2025
Raw hash: 10f721fa5938b481b2bf76cf82c7d68b2de47afcfe219cc7992b355414a11370

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityKiernan Trebach

Victim entityKiernan Trebach

Incidentdiscovered Oct 21, 2024

Stated responseNotified federal law enforcement regarding the event

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov