The 23-year-old leader of one of the world's largest networks of compromised computers, the Mariposa botnet, has been caught in Slovenia, FBI officials told the Associated Press. The officials would not release the name of the hacker whose botnet had infected 12 million  computers in 190 countries.

His arrest comes about five months after Spanish police broke up the massive cyber scam, arresting three of the alleged ringleaders who operated the so-called Mariposa botnet, stealing credit cards and online banking credentials. The botnet -- a network of infected computers -- appeared in December 2008 and infected more than half of the Fortune 1,000 companies and at least 40 major banks.

Read the full story at Associated Press.