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

KMJ Corbin & Company LLP

bd_0170243bafdea987 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 22, 2021

Filed

Jul 16, 2022

To disclose

38 weeks

Affected · nationwide

1,1301 in this filing

Linked

4 filings

Confidence

66%

Full breach record for KMJ Corbin & Company LLP →

KMJ Corbin & Company LLP, a public accounting firm, notified the NH AG of a data breach discovered on Oct 22, 2021, involving unauthorized access to employee email accounts. The incident affected 1,130 individuals (1 NH resident). Personal information may have been accessed. KMJ reset passwords, engaged forensic investigators, notified law enforcement, and offered credit monitoring.

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Incident timeline

discovery → filing · 38 weeks / 267 days

Oct 22, 2021

Discovered

Jul 16, 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

Montana State AGbd_bf8c0347da99c7242022-07-14 · +2dVerified
Massachusetts State AGbd_8b26491ddd1a22802022-07-13 · +3dVerified
California State AGbd_d1b93880a084c2e82022-07-13 · +3dCandidate

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: 1,130state + nationwide
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: External
Regulator citations: Notified New Hampshire Attorney General's Consumer Protection Bureau
Initial access: valid_credentials

During the incident: Reset account passwords for all logins to KMJ email accounts
Reported the incident to federal law enforcement
Partnered with computer forensics professionals to thoroughly investigate
Commenced a review of the entire contents of the accounts
Notified potentially affected individuals
Changes made: Continue 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(267 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

New Hampshire State AG+3d · 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://mm.nh.gov/files/uploads/doj/remote-docs/kmj-corbin-20220716.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 16, 2022
Raw hash: dc2438155f116af5564162b5081c515ed16d6e5e4d4997b133c8b347fe3b80e9

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 KMJ email accounts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov