Data report
The State of Data Breaches — October 2025
In October 2025, RecentBreaches tracked 757 data breaches exposing 43.7M records.
757
Breaches tracked
▲ 207 (+38%) vs Sep
43.7M
Records exposed
▲ 23.7M (+118%) vs Sep
753
Critical / high severity
750
Ransomware-linked
99% of breaches
Breaches by sector
| Sector | Breaches |
|---|---|
| Other | 757 |
Biggest breaches this month
| Organization | Records exposed |
|---|---|
| Canadian Tire | 38.3M |
| MyVidster (2025) | 3.9M |
| Substack | 663K |
| University of Pennsylvania | 624K |
| TISZA Világ | 199K |
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.