Once considered one of the most wanted computer criminals in the United States, Mitnick gained unauthorized access to numerous computer systems, stole proprietary software, and intercepted sensitive information.
A British hacker known as "Solo," McKinnon was accused of perpetrating the largest military computer hack of all time. He allegedly gained unauthorized access to 97 U.S. military and NASA computers.
Lamo gained recognition after hacking into the computer systems of several high-profile companies, including Microsoft, Yahoo!, and The New York Times. He was known as the "homeless hacker" for his transient lifestyle.
A notorious hacker, Gonzalez was responsible for leading a group that orchestrated major credit card breaches, including the infamous TJX Companies attack in 2007. He stole millions of credit card numbers, resulting in significant financial losses.
Although not an individual, Anonymous is a loosely associated international hacker collective responsible for various cyberattacks and hacktivist activities. Their targets have ranged from governments and corporations to individuals and organizations involved in controversial issues.