List of data breaches and cyber attacks in April 2021 – 1 billion records breached – It was another busy month in the cyber security sector, as we discovered 143 incidents that resulted in 1,098,897,134 breached records.

Ransomware was again one of the biggest contributors to that total, accounting for almost one in three data breaches.

As always, you can find the full list of incidents below, with those affecting UK organizations listed in bold.

In case you missed it, you may also be interested in our firstΒ quarterly review of data breaches and cyber attacks. The report takes the information collected in these lists and summarizes our findings.

It includes year-on-year comparisons in the number of incidents that were detected, a review of the most frequently breached sectors and a running total of incidents for the year.