Cidrex is a hazardous banking Trojan, which infects PCs in order to steal personal information from computer users and crack the security system for opening email accounts in Yahoo using CAPTCHA tests for assuring that the accounts were protected. Cidrex targets web sessions, records their content and changes it in order to gather and steal data from the infected computer user that can be used for obtaining access to social media and banking accounts. Cidrex spreads through spam emails, which include shortened links connected with the Blackhole attack toolkit. If the attack has been…