HackingProfessional ServicesProfessional ServicesStolen CredentialsTargetedData ExfiltratedIdentity (basic)Government IDFinancial accountEmploymentMediumContained

Mendes & Haney LLP

bd_136808e38160eb25 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Feb 28, 2018

Filed

Mar 30, 2018

To disclose

4 weeks

Affected

6state residents only

Linked

2 filings

Confidence

65%

Full breach record for Mendes & Haney LLP →

Mendes & Haney, LLP notified Montana residents of a data breach involving unauthorized network access via RDP between Jan 23 and Feb 26, 2018. The firm discovered the incident on Feb 28, 2018, after a rejected tax return triggered an investigation. Affected data included names, SSNs, and financial/account information. The firm engaged forensic investigators, notified law enforcement (FBI, IRS), and offered 12 months of credit monitoring.

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Incident timeline

undetected · 36 days

discovery → filing · 4 weeks / 30 days

Jan 23, 2018

Begins

Feb 28, 2018

Discovered

Mar 30, 2018

Filed

vs. sector median

14 wks faster

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

California State AGbd_8cc276bb2bc802402018-03-29 · +1dVerified

Name: Mendes & Haney LLP
norm: mendes haney

Name: Mendes & Haney LLP
norm: mendes haney
Industry: Professional Servicesllm

Discovered: Feb 28, 2018
Breach occurred: Jan 23, 2018 – Feb 26, 2018
Undetected for: 36 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 30, 2018
Affected individuals: 6state-resident count only
Data types: Identity (basic)Government IDFinancial accountEmployment
Data elements: Social Security numberDate of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1190 Exploit Public-Facing Application
Threat actor: ExternalFinancial
Regulator citations: Notified the FBINotified the IRSNotified the FTBNotified the three credit reporting bureausNotified all applicable state agenciesNotified local law enforcement
Initial access: external_remote_services

During the incident: Hired a specialized forensic IT firm to assist in our investigation
Notified the FBI, the IRS, the FTB, the three credit reporting bureaus, all applicable state agencies, and local law enforcement
Offering identity theft protection services through ID Experts
Reviewed our office procedures in an attempt to avoid such an incident from occurring again
Changes made: Reviewed our office procedures in an attempt to avoid such an incident from occurring again
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 weeks(30 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

California State AGMar 29 · first

Montana State AG+1d · 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://dojmt.gov/wp-content/uploads/Mendes-Haney-LLP.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 30, 2018
Raw hash: fbbace64752a31c67533a0877e1c0a8b629e5835fe0de33d933ca51e86723066

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityMendes & Haney LLP

Victim entityMendes & Haney LLP

Incidentdiscovered Feb 28, 2018

Stated responseHired a specialized forensic IT firm to assist in our investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov