Social EngineeringProfessional ServicesProfessional ServicesPhishingStolen CredentialsCustomer Data InvolvedDelayed DiscoveryPIIIdentity (basic)LowContained

KMJ Corbin & Company LLP

bd_bf8c0347da99c724 · schema v1 · pii pii-v1

Severity

Low

Discovered

Oct 22, 2021

Filed

Jul 14, 2022

To disclose

38 weeks

Affected

1state residents only

Linked

4 filings

Confidence

66%

Full breach record for KMJ Corbin & Company LLP →

KMJ Corbin & Company LLP notified individuals of a data breach discovered on October 22, 2021, involving unauthorized access to employee email accounts likely via phishing. Personal information of clients may have been viewed. The firm reset passwords, engaged forensic investigators, reported to law enforcement, and offered identity theft protection services.

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Incident timeline

discovery → filing · 38 weeks / 265 days

Oct 22, 2021

Discovered

Jul 14, 2022

Filed

vs. sector median

+19 wks slower

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Massachusetts State AGbd_8b26491ddd1a22802022-07-13 · +1dVerified
California State AGbd_d1b93880a084c2e82022-07-13 · +1dCandidate
New Hampshire State AGbd_0170243bafdea9872022-07-16 · +2dVerified

Name: KMJ Corbin & Company LLP
norm: kmj corbin

Name: KMJ Corbin & Company LLP
norm: kmj corbin
Industry: Professional Servicesllm

Discovered: Oct 22, 2021
Materiality determined: —
Notification sent: Jul 13, 2022
Affected individuals: 1state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Phishing
MITRE ATT&CK: T1078 Valid AccountsT1566.002 Spearphishing Link
Threat actor: External
Regulator citations: reported the incident to law enforcement
Initial access: phishing_link

During the incident: Reset account passwords for all logins to affected KMJ email accounts
Reported the incident to law enforcement
Partnered with computer forensics professionals to thoroughly investigate
Offering identity theft protection services through IDX
Changes made: Enhance the existing protections on our email system
Continuing to evaluate ways to strengthen the security of our network going forward
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 38 weeks(265 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Massachusetts State AGJul 13 · first

California State AGJul 13 · first

Montana State AG+1d · this page

New Hampshire 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/OCP/Consumer-Notification-Letter-393.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 14, 2022
Raw hash: d5fa573119275f3e7ac37ea5d70d9af7be68b04ee9aab2ab4df457fb36786063

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityKMJ Corbin & Company LLP

Victim entityKMJ Corbin & Company LLP

Incidentdiscovered Oct 22, 2021

Stated responseReset account passwords for all logins to affected KMJ email accounts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov