Western Washington Medical Group — July 2023 breach

Clustered 5 filings across 5 jurisdictions · filing window Oct 26, 2023 → Nov 8, 2023. View entity profile → Other incidents for this victim →

⚠ 2 cross-filing discrepancies →Merge100%

Determination

Confirmed

Members

5 filings

States

Affected · reported

350,863

First → last filing

Oct 26, 2023 → Nov 8, 2023

Merge confidence

100%

incident inc_00749af67a2f4bde · merged by deterministic · confidence 100%

Confirmed breach. Merged as one breach: 5 regulatory filings. Intrusion Jul 7, 2023–Aug 26, 2023, discovered Aug 26, 2023 — the first regulatory filing landed 61 days later. 350,863 individuals reported across the linked filings. Data reported: Government ID, PHI, Health (basic), and 2 more. Notifications rolled out on a 13-day schedule across 5 filings beginning Oct 26, 2023. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Notification delay

61days

Discovered → first regulatory filing

Discovery variance

30days

Range of discovered_at dates across filings

Filing span

13days

Time between earliest and latest filing

Not recorded for this incident

Leak precedence · Materiality delta · SEC filing delay — no leak-site claim in this cluster; no SEC 8-K in this cluster.

Regulatory clocksWashington⏱ WA AG >30dHIPAA✓ HHS notifiedMassachusetts✓ MA credit monitoring dueFull clock table in Litigation Timeline

No cross-filing comparison data available for this incident.

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