HackingProfessional ServicesProfessional ServicesStolen CredentialsCustomer Data InvolvedIdentity (basic)LowContained

Drost Kivlahan McMahon & O'Connor LLC

bd_93443d977d8450b8 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jan 22, 2024

Filed

Aug 29, 2024

To disclose

31 weeks

Affected

Not disclosed

Linked

8 filings

Confidence

66%

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

Drost Kivlahan McMahon & O’Connor LLC notified consumers of a data breach where an unauthorized actor accessed the network between Dec 30, 2023 and Jan 22, 2024. The incident involved the exposure of names and other personal information. The firm engaged forensic specialists, offered credit monitoring via Experian, and enhanced security measures.

J jump to incidentP pin to compareR raw source

Vermont clock✗ VT AG >45 bday31 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

Maine State AGbd_06cf8f5a53ec4a462024-08-29Verified
Montana State AGbd_4092b2b66591e42b2024-08-29Verified
Massachusetts State AGbd_60d7ee977e50e02d2024-08-29Verified by operator
New Hampshire State AGbd_80bff10e0475a3a32024-08-29Verified

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

Name: Drost Kivlahan McMahon & O'Connor LLC
norm: drost kivlahan mcmahon o connor
Domain: dkmolaw.com
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: Not disclosed
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: notifying regulators, as necessary
Initial access: valid_credentials

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
Offering you access to ## months of credit monitoring and identity theft protection services by Experian
Notifying regulators, as necessary
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: VT AG >45 bdayLeak >180d
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 · 7 filings · 7 states

View merged incident ↗

Illinois State AGAug 1 · first

Maine State AG+28d

Montana State AG+28d

Massachusetts State AG+28d

New Hampshire State AG+28d

Indiana State AG+28d

Vermont State AG+28d · this page

Pattern: first filing Aug 1 (IL), last Aug 29 (VT) — 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://ago.vermont.gov/document/2024-08-29-drost-kivlahan-mcmahon-oconnor-data-breach-notice-consumers
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: 8f89d5515f77b2f31ada2811fdebaa3ae91063d9e0f01090d7e89e542af664a2

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

ComplianceVT AG >45 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov