Every public data breach

50 disclosed this week · 26,344 on record

Lab 1

Disclosed Nov 4, 2026Unverified

Lab 1 warns breach data now exposes thousands more firms

Mara Sugue reports: Lab 1 has published a report analysing 328 million files from 2,089 datasets exposed after cyber attacks. It found that the median breach now exposes data linked to 542 organisations beyond the named victim. The study also found that 13,436 unique organisations were exposed through incidents recorded between 2025 and 2026, underlining...

What is known

People affectedNot stated in the sources we have
DisclosedNov 4, 2026
AttackHacking
Data exposedNot stated
SectorHealthcare
StatusUnverified: not yet confirmed by an official notice, a filing or the organization

Sources

Notices filed

History of this record
Added2026-11-06
First recordedby dailySource

First seen 2026-11-06 (Security news). Record counts are as reported. Not legal advice.

Everything about Lab 1