HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedFinancial accountHealth (basic)Identity (basic)Government IDPHIPIICriticalActive

Washington Gastroenterology (DHSWA.NET)

bd_a0f3e46923292d09 · schema v1 · pii pii-v1

Severity

Critical

Discovered

Mar 10, 2025

Filed

May 23, 2025

To disclose

11 weeks

Affected · nationwide

556,3491,261 in this filing

Linked

10 records

Confidence

71%

Full breach record for Washington Gastroenterology (DHSWA.NET) →

Washington Gastroenterology disclosed a cyberattack affecting 556,349 individuals. Unauthorized access occurred on Oct 23, 2024, discovered March 10, 2025. Exposed data included names, DOBs, SSNs, and financial account info. Notices sent to WA residents and HHS/OCR on May 23, 2025. Investigation ongoing.

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 · 138 days

discovery → filing · 11 weeks / 74 days

Oct 23, 2024

Begins

Mar 10, 2025

Discovered

May 23, 2025

Filed

vs. sector median

+2 wks slower

This filing is one of 10 records about the same incident.View merged incident

A leak claim by inc_ransom about this victim was first seen 126 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteinc_ransombd_4436a8fdef7f5ef42025-01-17 · +126dVerified

Regulatory filings (8) · sorted by filing gap

Montana State AGbd_0a70c1602ac9e3e12025-05-23Verified by operator
Nebraska State AGbd_4a6775f40250687e2025-05-23Candidate
HHS OCRbd_20053881fa1fad8d2025-05-09 · +14dVerified
Massachusetts State AGbd_038e9e7d9d536dc42025-08-22 · +91dVerified

Show 4 more filings ↓up to 101d gap

New Hampshire State AGbd_44f4768b3a04a1ed2025-08-22 · +91dVerified
California State AGbd_a7c6808bffa98bd62025-08-22 · +91dVerified by operator
Texas State AGbd_3be4517fb0653ab02025-08-26 · +95dVerified
Illinois State AGbd_786f230c29b384102025-09-01 · +101dVerified by operator

Name: Washington Gastroenterology (DHSWA.NET)
norm: washington gastroenterology dhswanet
Domain: washgi.com

Name: Washington Gastroenterology (DHSWA.NET)
norm: washington gastroenterology dhswanet
Domain: washgi.com
Industry: Healthcarellm

Discovered: Mar 10, 2025
Breach occurred: Oct 23, 2024
Undetected for: 138 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 23, 2025
Affected individuals: 556,349state + nationwide
Data types: Identity (basic)Government IDFinancial accountHealth (basic)PII
Data elements: NameSocial Security numberFinancial account numberDate of birthMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 100-199dexposure 0d
WA-stated discovery: Found after the fact
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: External
Regulator citations: Notified the U.S. Department of Health and Human Services (OCR)
Initial access: exploit_public_facing

During the incident: Engaged a third-party forensic firm to assist in conducting a comprehensive investigation
Providing access to credit monitoring services for twelve (12) months, through IDX
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Providing written notice of this incident to relevant state regulators
Providing written notice to the three major credit reporting agencies
Notified the U.S. Department of Health and Human Services
Provided prominent media notice
Implemented additional safeguards
Changes made: Decommissioned the legacy WAGI system not in use at the time of the event
Implemented new technical safeguards
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 11 weeks(74 days from discovery to filing)
Compliance flags: WA AG >30dLeak >90d
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 · 9 filings · 8 states

View merged incident ↗

HHS OCRMay 9 · first

Montana State AG+14d

Nebraska State AG+14d

Washington State AG+14d · this page

Massachusetts State AG+105d

New Hampshire State AG+105d

California State AG+105d

Texas State AG+109d

Illinois State AG+115d

Pattern: first filing May 9 (WA), last Sep 1 (IL) — a 115-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/BreachA33408.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 23, 2025
Raw hash: 8745a1fdc8bbecebf69dadff22b7fc8cfcc72c281abea423e2ffe7ff9e2e00e7

Linked disclosures

Ransomware claims (1)

Regulatory filings (8) · sorted by filing gap

Reporting entityWashington Gastroenterology (DHSWA.NET)

Victim entityWashington Gastroenterology (DHSWA.NET)

Incidentdiscovered Mar 10, 2025

Stated responseEngaged a third-party forensic firm to assist in conducting a comprehensive investigation

ComplianceWA AG >30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com