Two Greek students of informatics aged 31 and 27 years old had developed a malicious software called Lecpetex which was spreading through social networking sites stealing digital currencies, the so-called bitcoins, from more than 250,000 computers around the world. The authorities stated that the way the hackers were acting was very innovative with serious impact on the global computing system. The perpetrators were stealing bitcoins in order to turn them into euros using the digital currency exchangers available on the internet and to collect illegal profits.”]
Source: https://greekreporter.com/2014/07/03/greek-hackers-attacked-250000-computers-around-the-world/