Data report
The State of Data Breaches — October 2026
In October 2026, RecentBreaches tracked 459 data breaches exposing 8.9M records.
459
Breaches tracked
▼ 1K (-69%) vs Sep
8.9M
Records exposed
▼ 152.4M (-94%) vs Sep
441
Critical / high severity
404
Ransomware-linked
88% of breaches
Breaches by sector
| Sector | Breaches |
|---|---|
| Other | 376 |
| Healthcare | 17 |
| Manufacturing | 13 |
| Professional Services | 12 |
| Technology | 11 |
| Transportation | 6 |
Biggest breaches this month
| Organization | Records exposed |
|---|---|
| Central Person Register (CPR) | 8.8M |
| iRhythm | 70K |
| Cerner Corporation | 2K |
| National Life Insurance | 172 |
| Evan Chadwick | 50 |
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.
Monthly archive
Explore the full dataset: all breaches · companies · data studies.