It may be trajan related. Please read

来源: 于 2009-02-23 07:17:24 [旧帖] [给我悄悄话] 本文已被阅读：次

Title:

New trojan evades Captcha security to create webmail accounts and spam victims


Link:

http://www.itpro.co.uk/119186/trojan-creates-webmail-accounts-to-send-out-spam