HackingProfessional ServicesProfessional ServicesStolen CredentialsBECData ExfiltratedRansom DemandedTargetedIdentity (basic)Government IDFinancial accountMediumContained

Lake Kennedy McCulluch CPAs PS

bd_5eb232341ea8aab4 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Feb 11, 2017

Filed

Apr 7, 2017

To disclose

8 weeks

Affected

7state residents only

Linked

3 filings

Confidence

66%

Full breach record for Lake Kennedy McCulluch CPAs PS →

Lake Kennedy McCulloch CPAs PS notified Montana DOJ of a breach occurring Jan 30, 2017, discovered Feb 11, 2017. Perpetrators hacked the system, accessed 2015 tax returns (SSN, DOB, banking info), and fraudulently filed 2016 returns. The firm engaged forensic investigators, notified the IRS and FBI, and offered one year of Equifax credit monitoring.

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Incident timeline

undetected · 12 days

discovery → filing · 8 weeks / 55 days

Jan 30, 2017

Begins

Feb 11, 2017

Discovered

Apr 7, 2017

Filed

vs. sector median

11 wks faster

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Washington State AGbd_233ce8946e24c4a42017-04-09 · +2dVerified
Massachusetts State AGbd_909104de3c80e9212017-04-10 · +3dVerified

Name: Lake Kennedy McCulluch CPAs PS
norm: lake kennedy mcculluch cpas ps
Domain: islandcpas.com

Name: Lake Kennedy McCulluch CPAs PS
norm: lake kennedy mcculluch cpas ps
Domain: islandcpas.com
Industry: Professional Servicesllm

Discovered: Feb 11, 2017
Breach occurred: Jan 30, 2017
Undetected for: 12 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 4, 2017
Affected individuals: 7state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security numberDate of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid AccountsT1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Regulator citations: Alerted the IRSWorking with the IRS Criminal Enforcement DivisionReaching out to other law enforcement including the FBI
Initial access: exploit_public_facing

During the incident: Engaged an IT firm specializing in forensic investigation and analysis
Shut down remote access capabilities
Removed the infected workstation from our systems
Alerted the IRS
Working with the agency’s Criminal Enforcement Division
Reaching out to other law enforcement as appropriate, including the FBI
Retained legal counsel
Changes made: Reviewing our perimeter security protections
Training employees to recognize these kinds of attacks
Assessing and modifying our privacy and data security policies and procedures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(55 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Montana State AGApr 7 · first · this page

Washington State AG+2d

Massachusetts State AG+3d

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/Lake-Kennedy-McCulloch-CPAs.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 7, 2017
Raw hash: d5d67829a2337d5168e1f95db882466940922d838b9d188ac8fb4ce15cdc61e0

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityLake Kennedy McCulluch CPAs PS

Victim entityLake Kennedy McCulluch CPAs PS

Incidentdiscovered Feb 11, 2017

Stated responseEngaged an IT firm specializing in forensic investigation and analysis

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov