Every public data breach

44 disclosed this week · 26,355 on record

DigiNotar

Disclosed Aug 29, 2011Confirmed

Official notice

Hacked Dutch certificate authority issued at least 531 fraudulent certificates

Attackers compromised DigiNotar in June 2011 and issued at least 531 fraudulent certificates, some used for man-in-the-middle attacks on Iranian Gmail users. Browsers removed its roots around August 29, 2011, the Dutch government took over its operations on September 3, and the firm went bankrupt that month.

What is known

People affectedNot stated in the sources we have
DisclosedAug 29, 2011
AttackHacking
Data exposedOther
SectorTech · NL
StatusConfirmed

Sources

Notices filed

History of this record
Added2026-09-25
First recordedby seedSource

First seen 2026-09-25 (Research), confirmed by Research. Record counts are as reported. Not legal advice.

Everything about DigiNotar