December 2022
Intermediate to advanced
198 pages
6h 27m
English
Distrust and caution are the parents of security.
—Benjamin Franklin
And the winner is... Heartland Payment Systems for the single largest data breach in US history as of 2009. Since then, there have been many more data breaches. A few are shown in Table 2.1. Honestly it is debatable which breach gets the W for the most information leaks. Yahoo in December 2016 announced the incident that occurred in 2013 and leaked 3 billion accounts, and Alibaba leaked 1.1 billion pieces of user data in November 2019.
| April 2021 | 700 million accounts | |
| April 2020 | 530 million accounts | |
| MGM Resorts | February 2020 | 10.7 million guests |
| EasyJet ... |