Social EngineeringFinancial ServicesFinancePhishingCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumResolved

Sebastian Kanczugowski

bd_6b7c735e0a558ef1 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 21, 2022

Filed

Jun 28, 2023

To disclose

36 weeks

Affected

994state residents only

Linked

2 filings

Confidence

70%

Full breach record for Sebastian Kanczugowski →

Sebastian Kanczugowski, a financial advisor in Bellevue, WA, reported a phishing incident on 2022-10-21. An unauthorized party accessed his email account, exposing client PII including SSNs, driver's licenses, and financial account numbers. 994 Washington residents were notified on 2023-06-28. Remediation included enhanced email controls and one year of credit monitoring.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d36 weeks discovery → filing

⚠ occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Incident timeline

discovery → filing · 36 weeks / 250 days

Oct 21, 2022

Begins

Oct 21, 2022

Discovered

Jun 28, 2023

Filed

vs. sector median

+27 wks slower

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Montana State AGbd_26294ea747e7c04b2023-06-28Candidate

Name: Sebastian Kanczugowski
norm: sebastian kanczugowski
Industry: Finance

Name: Sebastian Kanczugowski
norm: sebastian kanczugowski
Industry: Finance
Industry: Financial Servicesllm

Discovered: Oct 21, 2022
Breach occurred: Oct 21, 2022
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 28, 2023
Affected individuals: 994state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: NameSocial Security numberDriver's licence numberFinancial account numberDate of birth
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 0dexposure 0d
WA-stated discovery: Found while ongoingContained same day
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: External
Initial access: phishing_link

During the incident: Took immediate steps to secure the account
Began an investigation
Began mailing notification letters to the Washington residents via U.S. mail
Offering notified individuals a complimentary one-year membership to credit monitoring and identity protection services
Changes made: Implemented additional measures to enhance its existing email controls
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 36 weeks(250 days from discovery to filing)
Compliance flags: WA AG >90d
Discovery-date grounding: occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Montana State AGJun 28 · first

Washington State AGJun 28 · first · 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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA24654.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 28, 2023
Raw hash: e0941f3db50bce30bf531dfff8fa1795023f92d81ba3e82b1d7334c0e551ccc3

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entitySebastian Kanczugowski

Victim entitySebastian Kanczugowski

Incidentdiscovered Oct 21, 2022

Stated responseTook immediate steps to secure the account

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com