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Change Healthcare: data breach notice filed with the Delaware Attorney General (2025-07-31)
Change Healthcare (Delaware): data breach notice filed with the Delaware Attorney General (2025-07-31). Its State residents affected (WA, DE) of 534,372 is top-decile (99th percentile of 480 records). Dated 461 days ago, it serves as a historical benchmark. Score 50/100. As of 2026-11-03, from Washington State Attorney General data breach notifications (data.wa.gov) and California Attorney General data security breach list (oag.ca.gov).
Data as of · Compiled by Zalwin from Washington State Attorney General data breach notifications (data.wa.gov) and California Attorney General data security breach list (oag.ca.gov)
State residents affected (WA, DE): 534,372 · 99th percentile of 480 BreachNoticePulse records · 268.4x the median
Free preview: all 7 published fields of this record are shown below. Locked: 100 related DE BreachNoticePulse records and the 5-column CSV export.
| 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 |
| State residents affected (WA, DE) percentile | 99th of 480 (median 1,991, 268.4x median) |
| Peer records CSV (101 DE records) | 🔒 Click to unlock → |
| CRM-ready export with official source URLs | 🔒 Click to unlock → |
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CSV columns: Organization · AG · Notice · Cause · Residents affected · official source URL
- Source agency: Washington State Attorney General data breach notifications (data.wa.gov) and California Attorney General data security breach list (oag.ca.gov)
- Record date: 2025-07-31
- Data refreshed: 2026-11-03
- Refunds on request within 14 days
Top BreachNoticePulse records (DE first): Change Healthcare · BAYHEALTH · DriveWealth, LLC. · Prosper Marketplace Inc. · TransUnion, LLC · Browse all by state and category →
LIVE PUBLIC DATA Source: Washington State Attorney General data breach notifications (data.wa.gov) and California Attorney General data security breach list (oag.ca.gov) · Last refreshed: Tue, 03 Nov 2026 05:14:41 GMT
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Peer benchmark and outreach value: Change Healthcare and 101 Delaware peers
- Delaware BreachNoticePulse records like this one: 101
- Change Healthcare's State residents affected (WA, DE): 99th percentile of 480 records
- Timing: Low: older than 30 days
- Estimated pipeline if you contact every Delaware peer: $20,200 (peers × rate × deal size; an estimate from your assumptions, not a forecast)
50 / 100 Score
- 100,000+ residents affected.
What is the BreachNoticePulse record for Change Healthcare in Delaware?
Change Healthcare filed a data-breach notice with the Delaware Attorney General on 2025-07-31, reporting 534,372 state residents affected.
How does Change Healthcare compare to other Delaware BreachNoticePulse records?
This is a top-decile record: its State residents affected (WA, DE) of 534,372 is 268.4x the median of 1,991 across 480 records. It is 461 days old; check the official source for later updates before acting.
Change Healthcare vs. top 3 peers
| Organization | Location | Amount | Percentile | Record date | Compare |
|---|---|---|---|---|---|
| Change Healthcare | DE | 534,372 | 99th | 2025-07-31 | This record |
| BAYHEALTH | DE | 483,378 | 99th | 2025-02-03 | Compare Change Healthcare vs BAYHEALTH → |
| DriveWealth, LLC. | DE | 87,459 | 96th | 2026-09-29 | View record → |
| Prosper Marketplace Inc. | DE | 48,397 | 93rd | 2025-12-09 | View record → |
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BreachNoticePulse: records in Delaware BreachNoticePulse: Not stated (California list)
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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.