HackingProfessional ServicesProfessional ServicesData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDHighContained

Drost Kivlahan McMahon & O'Connor LLC

bd_06cf8f5a53ec4a46 · schema v1 · pii pii-v1

Severity

High

Discovered

Jan 22, 2024

Filed

Aug 29, 2024

To disclose

31 weeks

Affected · nationwide

6,7302 in this filing

Linked

8 filings

Confidence

65%

Full breach record for Drost Kivlahan McMahon & O'Connor LLC →

Drost Kivlahan McMahon & O’Connor LLC reported an external system breach (hacking) occurring between Dec 30, 2023 and Jan 22, 2024. Suspicious activity was detected on Jan 22, 2024. The incident compromised names and Social Security numbers of 6,730 individuals, including 2 Maine residents. Notices were sent on Aug 29, 2024, offering 12 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Jan 22, 2024 → Filed with AG Aug 29, 2024220d ✗ ME AG >90d31 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 · 23 days

discovery → filing · 31 weeks / 220 days

Dec 30, 2023

Begins

Jan 22, 2024

Discovered

Aug 29, 2024

Filed

vs. sector median

+13 wks slower

This filing is one of 8 about the same incident.View merged incident

A leak claim by bianlian about this victim predates this filing by 201 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitebianlianbd_ad42d877b2791beb2024-02-09 · +201dVerified by operator

Regulatory filings (6) · sorted by filing gap

Montana State AGbd_4092b2b66591e42b2024-08-29Verified
Massachusetts State AGbd_60d7ee977e50e02d2024-08-29Verified by operator
New Hampshire State AGbd_80bff10e0475a3a32024-08-29Verified
Vermont State AGbd_93443d977d8450b82024-08-29Verified

Show 2 more filings ↓up to 28d gap

Indiana State AGbd_9f7fbabc75af16a72024-08-29Verified
Illinois State AGbd_13a9d7461e7394a22024-08-01 · +28dVerified by operator

Name: Drost Kivlahan McMahon & O'Connor LLC
norm: drost kivlahan mcmahon o connor
Domain: dkmolaw.com
Industry: professional_services

Name: Drost Kivlahan McMahon & O'Connor LLC
norm: drost kivlahan mcmahon o connor
Domain: dkmolaw.com
Industry: professional_services
Industry: Professional Servicesllm

Discovered: Jan 22, 2024
Breach occurred: Dec 30, 2023 – Jan 22, 2024
Undetected for: 23 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 29, 2024
Affected individuals: 6,730state + nationwide
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Providing written notice of this incident to relevant state regulators
Initial access: exploit_public_facing

During the incident: Launched an investigation into the nature and scope of the event with the assistance of third-party forensic specialists
Undertook a comprehensive and time-intensive review of all potentially impacted files with the assistance of third-party data review specialists
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
Providing written notice of this incident to relevant state regulators
Providing written notice to the three major credit reporting agencies
Changes made: Implementing additional technical security measures to strengthen the security of our systems
Reviewing and enhancing our existing data privacy policies and procedures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 31 weeks(220 days from discovery to filing)
Compliance flags: ME AG >90d · 220dLeak >180dME resident >60d · 220d
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: Jan 22, 2024
→ Filed with AG: Aug 29, 2024
220d 90 days ME AG >90d
Maine
Discovered: Jan 22, 2024
→ Notified: Aug 29, 2024
220d 60 days (analyst band; statutory cap is 30 days) ME resident >60d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jan 22, 2024 → Filed with AG: Aug 29, 2024	220d	90 days	ME AG >90d
Maine	Discovered: Jan 22, 2024 → Notified: Aug 29, 2024	220d	60 days (analyst band; statutory cap is 30 days)	ME resident >60d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 7 states

View merged incident ↗

Illinois State AGAug 1 · first

Montana State AG+28d

Massachusetts State AG+28d

New Hampshire State AG+28d

Vermont State AG+28d

Indiana State AG+28d

Maine State AG+28d · this page

Pattern: first filing Aug 1 (IL), last Aug 29 (ME) — a 28-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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/c160d237-eb72-4b5e-80cf-8755eedc6f42.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 29, 2024
Raw hash: 5218583b206ce2e0a52e67dedc4f93ea99e5b10e0a614c9266b60c3c0049000d

Linked disclosures

Ransomware claims (1)

Regulatory filings (6) · sorted by filing gap

Reporting entityDrost Kivlahan McMahon & O'Connor LLC

Victim entityDrost Kivlahan McMahon & O'Connor LLC

Incidentdiscovered Jan 22, 2024

Stated responseLaunched an investigation into the nature and scope of the event with the assistance of third-party forensic specialists

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov