Top 10 Most Infamous Black Hat Hackers of All Time

In the world of information technology, black hat hackers (also known as crackers or cyber-criminals) are known as the bad guys or villains. Most of them break into computers or networks without authorization to steal money and classified and sensitive information, while others are doing it simply for the challenge or the thrill of hacking. To accomplish their sinister work, crackers often create malware (malicious software) like viruses and worms to gain control of computer systems.

I have gathered here a list of ten of the most popular cyber-criminals the world has ever known. These evil geniuses were involved in high profile hacking that possibly caused millions, if not billions of dollars in total damages. However, some of them have now turned to the good side and are using their talents for the benefit of mankind.

Without further delay, here are the top 10 most infamous black hat hackers of all time:

10. Jonathan James

At the age of 16, Jonathan James (also known as c0mrade) became the first juvenile imprisoned for cybercrime in the United States. James carried out a series of intrusions into various systems including the computers of the Defense Threat Reduction Agency (DTRA) of the US Department of Defense. James had installed an unauthorized backdoor in a computer server in Dulles, Virginia that he used to install a sniffer allowing him to intercept over three thousand messages passing to and from DTRA employees while collecting countless usernames and passwords. This intrusion caused NASA to shut down its computers for three weeks costing them $41,000 to check and secure their systems. Jonathan James committed suicide in 2008.

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