MalwareProfessional ServicesProfessional ServicesTargetedIdentity (basic)Government IDMediumContained

McMahan, Thomson & Associates

bd_c0886b248777d43f · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 8, 2017

Filed

Apr 27, 2018

To disclose

20 weeks

Affected

3state residents only

Confidence

65%

Full breach record for McMahan, Thomson & Associates →

McMahan, Thomson & Associates notified the NH AG that an unauthorized third party accessed its system between Dec 2-8, 2017 via malware infection. 3 NH residents affected. Data included names, addresses, and SSNs. No evidence of actual data acquisition. Credit monitoring offered.

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Incident timeline

undetected · 6 days

discovery → filing · 20 weeks / 140 days

Dec 2, 2017

Begins

Dec 8, 2017

Discovered

Apr 27, 2018

Filed

vs. sector median

on median

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed3 affectedView incident

Name: MCDONALD HOPKINS LLC
norm: mcdonald hopkins

Name: McMahan, Thomson & Associates
norm: mcmahan thomson associates
Industry: Professional Servicesllm

Discovered: Dec 8, 2017
Breach occurred: Dec 2, 2017 – Dec 8, 2017
Undetected for: 6 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 27, 2018
Affected individuals: 3state-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 New Hampshire Attorney General

During the incident: Engaged external cybersecurity professionals
Conducted forensic investigation
Performed extensive manual document review
Provided written notice to potentially affected individuals
Offered complimentary membership with credit monitoring and identity theft protection service
Provided dedicated call center support
Advised residents to remain vigilant in reviewing financial account statements
Advised residents on process for placing fraud alert and security freeze
Changes made: Continually evaluates and modifies practices to enhance security and privacy
Taken steps to prevent further unauthorized access to client records
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 20 weeks(140 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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/mcmahan-thompson-20180427.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 27, 2018
Raw hash: 13a846ce86c87b5e948bc3ef6254759309485ed645739ab5224d19b04c840a74

Reporting entityMCDONALD HOPKINS LLC

Victim entityMcMahan, Thomson & Associates

Incidentdiscovered Dec 8, 2017

Stated responseEngaged external cybersecurity professionals

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov