Authorities alleged that the 25-year-old Ukrainian was responsible for losses totalling tens of millions of dollars worldwide through his criminal activities. He was arrested by authorities in Turkey in July 2007 following a secret service operation.
"Yastremskiy will certainly have plenty of time to ponder whether his hacking activities were worthwhile," said Graham Cluley, senior technology consultant at Sophos. "The length of this jail time should also make others engaged in cybercrime think again - the rewards may be large, but you risk ruining the rest of your life, and causing years of misery for your family and friends. It may seem like the chances of being caught are small, but there are more and more convictions happening all the time, and the authorities are getting better than ever at co-operating at an international level to catch the bad guys."