Prosper Marketplace Inc.: data breach notice filed with the Delaware Attorney General (2025-12-09)
Prosper Marketplace Inc. (Delaware): data breach notice filed with the Delaware Attorney General (2025-12-09). Its State residents affected (WA, DE) of 48,397 is top-decile (93rd percentile of 480 records). Dated 331 days ago, it serves as a historical benchmark. Score 40/100. As of 2026-11-04, 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): 48,397 · 93th percentile of 480 BreachNoticePulse records · 24.3x the median
Free preview: all 9 published fields of this record are shown below. Locked: 100 related DE BreachNoticePulse records and the 5-column CSV export.
| Field | Value |
|---|---|
| Organization | Prosper Marketplace Inc. |
| Attorney General notified | DE |
| Notice date | 2025-12-09 |
| Breach dates | 2025-04-29 |
| State residents affected | 48,397 |
| Total affected (all states) | 13,076,476 |
| Data exposed | Social Security number, Federal identification card number, Account number, credit card account number, or debit card number, in combination with any required security code, access code, or password that would permit access to a financial account |
| Notice letter | https://attorneygeneral.delaware.gov/wp-content/uploads/sites/50/2026/01/Prosper_Sample-Individual-Notice-12-09-25.pdf |
| Days from discovery to notice | 99 |
| State residents affected (WA, DE) percentile | 93th of 480 (median 1,991, 24.3x 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: 2025-12-09
- Data refreshed: 2026-11-04
- Refunds on request within 14 days
Top BreachNoticePulse records (DE first): Change Healthcare · Change Healthcare · BAYHEALTH · DriveWealth, LLC. · 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: Wed, 04 Nov 2026 06:06:58 GMT
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Peer benchmark and outreach value: Prosper Marketplace Inc. and 101 Delaware peers
- Delaware BreachNoticePulse records like this one: 101
- Prosper Marketplace Inc.'s State residents affected (WA, DE): 93rd 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)
40 / 100 Score
- 10,000+ residents affected.
What is the BreachNoticePulse record for Prosper Marketplace Inc. in Delaware?
Prosper Marketplace Inc. filed a data-breach notice with the Delaware Attorney General on 2025-12-09, reporting 48,397 state residents affected.
How does Prosper Marketplace Inc. compare to other Delaware BreachNoticePulse records?
This is a top-decile record: its State residents affected (WA, DE) of 48,397 is 24.3x the median of 1,991 across 480 records. It is 331 days old; check the official source for later updates before acting.
Prosper Marketplace Inc. vs. top 3 peers
| Organization | Location | Amount | Percentile | Record date | Compare |
|---|---|---|---|---|---|
| Prosper Marketplace Inc. | DE | 48,397 | 93rd | 2025-12-09 | This record |
| TransUnion, LLC | DE | 21,043 | 88th | 2025-08-26 | Compare Prosper Marketplace Inc. vs TransUnion, LLC → |
| Carnival Corporation | DE | 17,876 | 85th | 2026-05-27 | Compare Prosper Marketplace Inc. vs Carnival Corporation → |
| 700Credit LLC | DE | 15,432 | 83rd | 2025-12-22 | View record → |
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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.