HackingProfessional ServicesProfessional ServicesStolen CredentialsCustomer Data InvolvedTargetedIdentity (basic)Government IDMediumContained

Topping, Kessler & Co.

bd_ddb5a28f8b3922c3 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 31, 2023

Filed

Jul 26, 2023

To disclose

17 weeks

Affected

1state residents only

Confidence

66%

Full breach record for Topping, Kessler & Co. →

Topping, Kessler & Co. notified individuals in July 2023 of a March 2023 incident where an unknown actor gained unauthorized access to its network via valid credentials, resulting in unauthorized tax filings. The breach likely involved names and government IDs (SSNs). The firm notified federal law enforcement and offered credit monitoring.

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Incident timeline

discovery → filing · 17 weeks / 117 days

Mar 31, 2023

Discovered

Jul 26, 2023

Filed

vs. sector median

1 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1 affectedView incident

Name: Topping, Kessler & Co.
norm: topping kessler

Name: Topping, Kessler & Co.
norm: topping kessler
Industry: Professional Servicesllm

Discovered: Mar 31, 2023
Materiality determined: —
Notification sent: Jul 21, 2023
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified federal law enforcement
Initial access: valid_credentials

During the incident: Took steps to secure the company’s network environment
Implemented additional security features to reduce the risk of a similar incident
Notified federal law enforcement
Offering complimentary credit monitoring and identity protection services for 12/24 months through IDX
Changes made: Implemented additional security features to reduce the risk of a similar incident occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 17 weeks(117 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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-471.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 26, 2023
Raw hash: 69744ab014526a291f8ed63ca811c2374c9268595f4c1c34b8f7fdce60e206ea

Reporting entityTopping, Kessler & Co.

Victim entityTopping, Kessler & Co.

Incidentdiscovered Mar 31, 2023

Stated responseTook steps to secure the company’s network environment

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov