HackingProfessional ServicesProfessional ServicesStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedPIIIdentity (basic)LowContained

KMJ Corbin & Company LLP

bd_d1b93880a084c2e8 · schema v1 · pii pii-v1

Severity

Low

Discovered

Oct 22, 2021

Filed

Jul 13, 2022

To disclose

38 weeks

Affected

Not disclosed

Linked

4 filings

Confidence

65%

Full breach record for KMJ Corbin & Company LLP →

KMJ Corbin & Company LLP notified clients of a data breach after discovering unauthorized access to employee email accounts on October 22, 2021. An investigation by forensic professionals determined that an external unauthorized person accessed certain employee email accounts. It is possible that personal information contained in emails or attachments was viewed or acquired. The firm reset passwords, engaged forensics, and offered identity theft protection services.

J jump to incidentP pin to compareR raw source

California clockDiscovered Oct 22, 2021 → Notified Jul 13, 2022264d ✗ CA 60-day late38 weeks discovery → filing

Incident timeline

discovery → filing · 38 weeks / 264 days

Oct 22, 2021

Discovered

Jul 13, 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_8b26491ddd1a22802022-07-13Verified
Montana State AGbd_bf8c0347da99c7242022-07-14 · +1dVerified
New Hampshire State AGbd_0170243bafdea9872022-07-16 · +3dVerified

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: Not disclosed
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: External
Regulator citations: Reported the incident to law enforcement

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
Commenced a review of the entire contents of the accounts
Notified potentially affected individuals about it
Offering identity theft protection services through IDX
Changes made: 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(264 days from discovery to filing)
Compliance flags: CA 60-day late · 264d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Oct 22, 2021
→ Notified: Jul 13, 2022
264d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Oct 22, 2021 → Notified: Jul 13, 2022	264d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

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 · this page

Montana State AG+1d

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://oag.ca.gov/ecrime/databreach/reports/sb24-555258
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 13, 2022
Raw hash: 9a57a6a34273139808891be831009b84ce12dae711d0fc6bd9e5d5df7e8cf7d9

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

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov