An anonymous reader writes "Mt. Gox is the the largest Bitcoin exchange in the world, and as such it and its users are being repeatedly targeted by attackers. Some two months ago, it battled a massive DDoS attack that was likely aimed at destabilizing the virtual currency and allow the criminals to profit from the swings. Now, according to Symantec researchers, the criminals have turned to spoofing Mt. Gox' site and tricking its customers into downloading malware — the Ponik downloader Trojan, which is also able to steal passwords."