Data report
The State of Data Breaches — October 2026
In October 2026, RecentBreaches tracked 1,145 data breaches exposing 9.1M records.
1,145
Breaches tracked
▼ 343 (-23%) vs Sep
9.1M
Records exposed
▼ 152.7M (-94%) vs Sep
1,085
Critical / high severity
988
Ransomware-linked
86% of breaches
Breaches by sector
| Sector | Breaches |
|---|---|
| Other | 951 |
| Not Found | 37 |
| Manufacturing | 28 |
| Professional Services | 26 |
| Healthcare | 25 |
| Technology | 21 |
Biggest breaches this month
| Organization | Records exposed |
|---|---|
| Central Person Register (CPR) | 8.8M |
| iRhythm Technologies Inc. | 221K |
| iRhythm | 70K |
| AssuranceAmerica Managing General Agency, LLC | 23K |
| Cerner Corporation | 2K |
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.