# Change Healthcare: data breach notice filed with the Delaware Attorney General (2025-07-31)

**Score:** 50/100

| Field | Value |
|---|---|
| Organization | Change Healthcare |
| Attorney General notified | DE |
| Notice date | 2025-07-31 |
| Breach dates | 1971-01-01 |
| State residents affected | 534,372 |
| Total affected (all states) | 192,700,000 |
| Days from discovery to notice | 19935 |

## Why this score
- 100,000+ residents affected.

Source: Washington State Attorney General data breach notifications (data.wa.gov) and California Attorney General data security breach list (oag.ca.gov) (https://data.delaware.gov/d/dir6-wx8v). Last refreshed: 2026-11-04T06:06:58.316Z.
From the Washington, California and Delaware Attorney General breach notification lists, as posted. A notice is the organization's own report under state breach-notification law; it is not a finding of wrongdoing or of harm. California does not publish cause or counts in its list; Delaware lists data types and counts but not cause. Read the notice on the AG site before relying on it.