This attack could pose a serious security threat. You should take immediate action to stop any damage or prevent further damage from happening.
This signature detects HTTP requests for the spyware's installation file.
Spyware.zSearch is a browser toolbar with a search field. The program collects information about Web site visits, Web searches, basic computer information, and software, and then sends that information to a remote Web site. The remote Web site can also update or disable the program without any user intervention.
Programs that have the ability to scan systems or monitor activity, and relay information to other computers or locations in cyberspace. Among the information that may be actively or passively gathered and disseminated by spyware are passwords, log-in details, account numbers, personal information, individual files, or other personal documents. Spyware may also gather and distribute information related to the user's computer, applications running on the computer, Internet browser usage, or other computing habits.
Spyware frequently attempts to remain unnoticed, either by actively hiding or by simply not making its presence on a system known to the user. Spyware can be downloaded from Web sites (typically in shareware or freeware), email messages, and instant messengers. Additionally, a user may unknowingly receive and/or trigger spyware by accepting an End User License Agreement from a software program linked to the spyware, or from visiting a Web site that downloads the spyware with or without an End User License Agreement.
Visit the Symantec Security Response Web site for removal instructions.