HackingProfessional ServicesFinancial ServicesProfessional ServicesStolen CredentialsBECData ExfiltratedCustomer Data InvolvedRansom DemandedTargetedIdentity (basic)Government IDFinancial accountHighContained

Lake Kennedy McCulluch CPAs PS

bd_233ce8946e24c4a4 · schema v1 · pii pii-v1

Severity

High

Discovered

Feb 11, 2017

Filed

Apr 9, 2017

To disclose

8 weeks

Affected · nationwide

1,7931,688 in this filing

Linked

3 filings

Confidence

69%

Full breach record for Lake Kennedy McCulluch CPAs PS →

Lake Kennedy McCulluch CPAs PS reported a cyberattack on Jan 30, 2017, discovered Feb 11, 2017. Perpetrators hacked systems, accessing 2015 tax return data (SSN, DOB, banking info) for ~1,793 individuals. Data was used to fraudulently file 2016 tax returns. 1,688 Washington residents affected. Forensic investigation and law enforcement (IRS, FBI) engagement occurred.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 12 days

discovery → filing · 8 weeks / 57 days

Jan 30, 2017

Begins

Feb 11, 2017

Discovered

Apr 9, 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

Massachusetts State AGbd_909104de3c80e9212017-04-10 · +1dVerified
Montana State AGbd_5eb232341ea8aab42017-04-07 · +2dCandidate

Name: Jackson Lewis
norm: jackson lewis
Domain: jacksonlewis.com

Name: Lake Kennedy McCulluch CPAs PS
norm: lake kennedy mcculluch cpas ps
Industry: Professional ServicesllmFinancial Servicesllm

Discovered: Feb 11, 2017
Breach occurred: Jan 30, 2017
Undetected for: 12 daysoccurrence → discovery
Materiality determined: —
Notification sent: Feb 22, 2017
Affected individuals: 1,793state + nationwide
Data types: Identity (basic)Government IDFinancial account
Data elements: Date of birthFinancial account numberSocial Security numberName
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 0d
WA-stated discovery: Found after the fact
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Regulator citations: Notified the IRSWorking with the IRS Criminal Enforcement DivisionReached out to the FBI
Initial access: exploit_public_facing

During the incident: Commenced a forensic investigation by a nationally recognized third-party forensic investigation firm
Contacted various law enforcement agencies including the Internal Revenue Service
Changed system passwords, including for its accounting and tax software products
Engaged an IT firm specializing in forensic investigation and analysis
Shut down remote access capabilities and removed the infected workstation from our systems
Retained legal counsel to assist with fulfilling notification and related obligations
Reached out to other law enforcement as appropriate, including the FBI
Changes made: Reexamining its current data privacy and security policies and procedures to find ways of reducing the risk of future data incidents
Reviewing its systems and making improvements where it can to minimize the chances of this happening again
Reviewing its perimeter security protections
Training employees to recognize these kinds of attacks
Arranged for Equifax to provide its Credit Watch Silver identity theft protection product for one year at no cost
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(57 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

Washington State AG+2d · this page

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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachM9691.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 9, 2017
Raw hash: aeacd8265dbe98a9cab8c4106825a0bc46603081a295e7a43111a9d1132af6fe

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityJackson Lewis

Victim entityLake Kennedy McCulluch CPAs PS

Incidentdiscovered Feb 11, 2017

Stated responseCommenced a forensic investigation by a nationally recognized third-party forensic investigation firm

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com