UnknownProfessional ServicesProfessional ServicesCustomer Data InvolvedGovernment IDFinancial accountIdentity (basic)MediumActive

Stephen F. McFadden CPA

bd_873cf92079cc7b51 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 30, 2021

Filed

Jun 22, 2021

To disclose

8 weeks

Affected

Not disclosed

Confidence

65%

Full breach record for Stephen F. McFadden CPA →

Stephen F. McFadden CPA notified clients of a potential security incident in late April 2021 after receiving an IRS alert that a tax return had already been filed for a client. The firm engaged forensic investigators, who had not identified signs of data access or exfiltration at the time of notification. Affected data may include names, addresses, Social Security numbers, and bank account numbers. The investigation was ongoing, and the firm provided identity theft protection services.

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California clockDiscovered Apr 30, 2021 → Notified Jun 17, 202148d ✓ CA 60-day OK8 weeks discovery → filing

Incident timeline

discovery → filing · 8 weeks / 53 days

Apr 30, 2021

Discovered

Jun 22, 2021

Filed

vs. sector median

10 wks faster

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

Name: Stephen F. McFadden CPA
norm: stephen f mcfadden cpa

Name: Stephen F. McFadden CPA
norm: stephen f mcfadden cpa
Industry: Professional Servicesllm

Discovered: Apr 30, 2021
Materiality determined: —
Notification sent: Jun 17, 2021
Affected individuals: Not disclosed
Data types: Government IDFinancial accountIdentity (basic)
Data elements: Social Security number
Attack vector: Unknown
Regulator citations: Notified the IRS

During the incident: Contacted the IRS and my tax software provider
Hired independent computer forensic investigators
Arranged for identity theft protection services through IDX
Provided name and Social Security number to the IRS to apply protections
Changes made: Working closely with investigators to identify additional security measures to further enhance the security of my system
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(53 days from discovery to filing)
Compliance flags: CA 60-day OK · 48d
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: Apr 30, 2021
→ Notified: Jun 17, 2021
48d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Apr 30, 2021 → Notified: Jun 17, 2021	48d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

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://oag.ca.gov/ecrime/databreach/reports/sb24-542117
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 22, 2021
Raw hash: d4cc8489b39aaf10a9df7934b9174de7a360a0181c8c743ee8cf7069f9113be1

Reporting entityStephen F. McFadden CPA

Victim entityStephen F. McFadden CPA

Incidentdiscovered Apr 30, 2021

Stated responseContacted the IRS and my tax software provider

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov