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A Pie Chart of the Biggest Data Breaches [Revised for 2021]

A Pie Chart of the Biggest Data Breaches [Revised for 2021]

Edward Kost
Edward Kost
updated Aug 19, 2021

Below is a pie chart representing the percentage contribution of each data breach victim to the 57 largest data breaches of all time.

CAM4 covers the majority of the pie, accounting for almost 50% of all compromised records.

If the CAM4 breach is disregarded, the impacts of the other breaches can be better appreciated. The pie chart below represents this updated distribution. 

Now, it becomes clearer that LinkedIn accounts for the majority of compromised social media records. The data breach event that caused this colossal impact occurred in June 2021, when data impacting 92% of LinkedIn users was posted for sale on the dark web.

Preview of LInkedIn user records posted on dark web forum

LinkedIn denies a data breach occurred because hackers didn’t compromise security controls, but just scraped user data through its API.

But because victims could now be vulnerable to a barrage of phishing attacks, perhaps a data breach classification is accurate after all.

Learn about the difference between a data breach and a data leak.

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