World's Worst Employees

8 of 8

Teen Email Bomb

In 2003, then 16-year-old David Lennon was reportedly canned from his part-time job at Domestic & General Group, a British insurance company. So, in response, the teen went home and sent his boss 5 MILLION emails, all quoting lines from the horror movie "The Ring." The email attack caused the company’s servers to crash and cost thousands of dollars in damages. Three years later, Lennon was successfully prosecuted for violating the U.K.'s Computer Misuse Act. He got a two-month curfew.