HackingProfessional ServicesProfessional ServicesStolen CredentialsData ExfiltratedTargetedPIIIdentity (basic)LowContained

Katz Nannis + Solomon PC

bd_e6afde2e870ca170 · schema v1 · pii pii-v1

Severity

Low

Discovered

Nov 28, 2023

Filed

Sep 3, 2024

To disclose

40 weeks

Affected

18state residents only

Linked

6 filings

Confidence

65%

Full breach record for Katz Nannis + Solomon PC →

Katz Nannis + Solomon, PC notified Montana residents of a data breach where unauthorized access occurred between Nov 21-27, 2023. The firm discovered the incident on Nov 28, 2023. Personal information including names and variable data elements was acquired. The firm engaged external cybersecurity specialists, reported to the FBI, and offered credit monitoring services.

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Incident timeline

undetected · 7 days

discovery → filing · 40 weeks / 280 days

Nov 21, 2023

Begins

Nov 28, 2023

Discovered

Sep 3, 2024

Filed

vs. sector median

+21 wks slower

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Indiana State AGbd_1689385cfde646b42024-09-03Verified
California State AGbd_6c163408a24aeb8c2024-09-03Verified
New Hampshire State AGbd_ef65328ce423e0db2024-09-03Verified
Massachusetts State AGbd_cfea763977cef6992024-09-04 · +1dVerified

Show 1 more filing ↓up to 2d gap

Illinois State AGbd_1afbbb93237d663f2024-09-01 · +2dVerified

Name: Katz Nannis + Solomon PC
norm: katz nannis solomon

Name: Katz Nannis + Solomon PC
norm: katz nannis solomon
Industry: Professional Servicesllm

Discovered: Nov 28, 2023
Breach occurred: Nov 21, 2023 – Nov 27, 2023
Undetected for: 7 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 3, 2024
Affected individuals: 18state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Reported the matter to the FBI
Initial access: valid_credentials

During the incident: Engaged a team of leading external cybersecurity specialists to assist in our response and conduct an investigation
Reported the matter to the FBI
Implemented additional measures to enhance our network security
Offering complimentary credit monitoring and identity theft protection services through IDX
Changes made: Implemented additional measures to enhance our network security and minimize the risk of a similar incident occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 40 weeks(280 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Illinois State AGSep 1 · first

Indiana State AG+2d

California State AG+2d

New Hampshire State AG+2d

Montana 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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-1653.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 3, 2024
Raw hash: e79bf9a31fa68a1ddd30ba149af3cd73aee7041435f986d5afb152ab00687e7f

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityKatz Nannis + Solomon PC

Victim entityKatz Nannis + Solomon PC

Incidentdiscovered Nov 28, 2023

Stated responseEngaged a team of leading external cybersecurity specialists to assist in our response and conduct an investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov