List of data breaches and cyber attacks in June 2021 – 9.8 million records breached

We found a comparatively low 9,780,931 breached records from publicly disclosed security incidents in June 2021.

But don’t be fooled by that number – it comes from 106 incidents, which is roughly average for the year.

It’s simply the case that in the majority of cases, the breached organisation didn’t reveal how much data was compromised, either because it didn’t know or wasn’t obliged to reveal it publicly.

June’s figures bring the annual running total of security incidents to 729 and the total number of breached records to 3,947,030,094.

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

And don’t forget to subscribe to our Weekly Round-up to receive the latest industry news and advice – including our Q2 review of data breaches and cyber attacks, based on these lists, which will be published in early July.

Cyber attacks


Data breaches