Are you a Windows user who recently received an email about an important company update for your computer? So if your company email address is jsmith@acmecorp.com, the email message will seen to come from administrator@acmecorp.com. Attached to the emails is a .gadget file, a type of program that runs in the Windows sidebar. Its not clear what this file is, but Jonathan French of Gulf Breeze, Fla.-based email and Web security firm AppRiver, who discovered the malware this morning (May 16), observed that this process is similar to the way the prolific Gameover malware, a variant on the eternally adaptable Zeus banking Trojan, often infects computers.