HackingProfessional ServicesProfessional ServicesCustomer Data InvolvedEmployee Data InvolvedGovernment IDIdentity (basic)Financial accountEmploymentMediumContained

Hilderbrand & Clark, CPA's

bd_d823c307d71b2f0d · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jul 10, 2017

Filed

Jul 27, 2017

To disclose

17 days

Affected

Not disclosed

Linked

2 filings

Confidence

64%

Full breach record for Hilderbrand & Clark, CPA's →

Hilderbrand & Clark, CPA experienced unauthorized access to its systems from a foreign IP address on June 14, 2017, discovered on July 10, 2017. The incident potentially exposed sensitive tax return information for clients and employees, including Social Security numbers, financial account details, and employment data. The firm notified the FBI, IRS, and credit bureaus, and offered one year of identity theft protection services.

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California clockDiscovered Jul 10, 2017 → Notified Jul 25, 201715d ✓ CA 60-day OK17 days discovery → filing

Incident timeline

undetected · 26 days

discovery → filing · 17 days

Jun 14, 2017

Begins

Jul 10, 2017

Discovered

Jul 27, 2017

Filed

vs. sector median

16 wks faster

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

Massachusetts State AGbd_4fe542c9059770dc2017-07-26 · +1dVerified

Name: Hilderbrand & Clark, CPA's
norm: hilderbrand clark cpa s
Domain: hilderbrandcpa.com

Name: Hilderbrand & Clark, CPA's
norm: hilderbrand clark cpa s
Domain: hilderbrandcpa.com
Industry: Professional Servicesllm

Discovered: Jul 10, 2017
Breach occurred: Jun 14, 2017
Undetected for: 26 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 25, 2017
Affected individuals: Not disclosed
Data types: Government IDIdentity (basic)Financial accountEmployment
Data elements: Date of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified the IRSNotified the FBINotified all applicable state agencies

During the incident: Notified the IRS
Had local IT firm review our system
Hired a specialized forensic IT firm to investigate
Notified the FBI
Notified all three credit bureaus
Notified all applicable state agencies
Partnered with Equifax to provide Credit Watch Silver identity theft protection product for one year at no charge
Changes made: Reviewing office policies and procedures to ensure all security measures are taken to avoid such an incident from occurring again
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 17 days(17 days from discovery to filing)
Compliance flags: CA 60-day OK · 15d
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: Jul 10, 2017
→ Notified: Jul 25, 2017
15d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Jul 10, 2017 → Notified: Jul 25, 2017	15d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Massachusetts State AGJul 26 · first

California State AG+1d · 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://oag.ca.gov/ecrime/databreach/reports/sb24-100608
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 27, 2017
Raw hash: 66d0183e428427bd4f0b6113aadd4c9f99321c5964cc1f8005e7fdeaeac1a480

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityHilderbrand & Clark, CPA's

Victim entityHilderbrand & Clark, CPA's

Incidentdiscovered Jul 10, 2017

Stated responseNotified the IRS

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov