Recent Healthcare Data Breaches 2024 List. The average breach size in 2024 is 123,785 records and the median data breach size is 3,716 records. In the year to august 31, 2024, there have been 491 data breaches of 500 or more records, and at least 58,668,002 records are known to have been breached.

What follows are the details we’ve gathered on 10 major cyberattacks and data breaches in 2024 so far (in chronological order). Through june 30, 387 data breaches, affecting more than 45 million people, were reported on the portal — the highest number of.