Data report
The State of Data Breaches — September 2025
In September 2025, RecentBreaches tracked 550 data breaches exposing 20.0M records.
550
Breaches tracked
▲ 19 (+4%) vs Aug
20.0M
Records exposed
▲ 11.7M (+140%) vs Aug
549
Critical / high severity
548
Ransomware-linked
100% of breaches
Breaches by sector
| Sector | Breaches |
|---|---|
| Other | 550 |
Biggest breaches this month
| Organization | Records exposed |
|---|---|
| Prosper | 17.6M |
| WIRED | 2.4M |
Are you in any of these breaches?
Check your email against 15.4B breach records, free — run a scan on GalaxyWarden.
Check your email against 15.4B breach records, free — run a scan on GalaxyWarden.
Methodology: figures are aggregated from breaches tracked in the RecentBreaches database, grouped by incident month. Free to cite with attribution to RecentBreaches.
Explore the full dataset: all breaches · companies · data studies.