MalwareHealthcareTechnologyHealthcareRansomwareData ExfiltratedData EncryptedCustomer Data InvolvedPIIPHIIdentity (basic)Health (basic)MediumContained

Arbor Associates Inc

bd_4477dbc38992c443 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 17, 2025

Filed

Jul 3, 2025

To disclose

11 weeks

Affected

9,005state residents only

Linked

11 filings

Confidence

68%

Full breach record for Arbor Associates Inc →

Arbor Associates, Inc. issued a supplemental notice to the Washington AG regarding a ransomware incident. Unauthorized access occurred between April 15-17, 2025. The breach affected approximately 9,005 Washington residents, exposing PHI and PII including names, DOBs, and medical record numbers. Arbor engaged cybersecurity experts and implemented additional safeguards.

J jump to incidentP pin to compareR raw source

Washington clock⏱ WA AG >30d11 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 2 days

discovery → filing · 11 weeks / 77 days

Apr 15, 2025

Begins

Apr 17, 2025

Discovered

Jul 3, 2025

Filed

vs. sector median

1 wks faster

This filing is one of 11 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Massachusetts State AGbd_15a5c87af98e6ebd2025-07-03Verified
HHS OCRbd_19e14edfcd577e892025-07-03Verified
Montana State AGbd_a984f051dd655e2f2025-07-03Verified
California State AGbd_d13f3fd45725847a2025-07-03Verified

Show 6 more filings ↓up to 40d gap

Illinois State AGbd_2139cdce40ed95232025-07-01 · +2dCandidate
Vermont State AGbd_5c23d20e0ad3430d2025-07-17 · +14dVerified
Oregon State AGbd_7e87e5d560735bef2025-07-17 · +14dVerified
Montana State AGbd_90472ab9e6074d4a2025-08-08 · +36dVerified
California State AGbd_b50fb3d4dec6d3c42025-08-08 · +36dVerified
Texas State AGbd_a75ba824f7da509a2025-08-12 · +40dVerified

Name: Arbor
norm: arbor
Domain: arbor-education.com

Name: Arbor Associates Inc
norm: arbor associates
Domain: arbor-associates.com
Industry: HealthcarellmTechnologyllm

Discovered: Apr 17, 2025
Breach occurred: Apr 15, 2025 – Apr 17, 2025
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 8, 2025
Affected individuals: 9,005state-resident count only
Data types: PIIPHIIdentity (basic)Health (basic)
Data elements: NameDate of birthHealth insurance IDMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 0dexposure 0d
WA-stated discovery: Found while ongoingContained same day
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Providing written notice of this incident to relevant state and federal regulators

During the incident: Engaged independent cybersecurity experts to assist with the process
Moved quickly to investigate and respond to the incident
Assessed the security of Arbor environment
Implemented additional safeguards and training
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Providing written notice of this incident to relevant state and federal regulators
Providing written notice to the three major credit reporting agencies
Changes made: Implemented additional safeguards and training
Implemented measures to enhance 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: 11 weeks(77 days from discovery to filing)
Compliance flags: WA AG >30d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 9 states

View merged incident ↗

Illinois State AGJul 1 · first

Massachusetts State AG+2d

HHS OCR+2d

Montana State AG+2d

California State AG+2d

Washington State AG+2d · this page

Vermont State AG+16d

Oregon State AG+16d

Montana State AG+38d

California State AG+38d

Texas State AG+42d

Pattern: first filing Jul 1 (IL), last Aug 12 (TX) — a 42-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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/BreachA33819.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 3, 2025
Raw hash: 2a37d5f3f5317d286ce260ac4a8bce93480ddee6516ce3f8d92cfc32fb6997c2

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityArbor

Victim entityArbor Associates Inc

Incidentdiscovered Apr 17, 2025

Stated responseEngaged independent cybersecurity experts to assist with the process

ComplianceWA AG >30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com