Adware/DNSErr, Adware/IEDriver, Adware/Purity Scan, Adware/Search Aid, Adware/Show Search, Adware/Twocc, Spyware/ISTbar, Trj/Bookmark.
CWS may gain complete control of your mailbox to generate and send e-mail with virus attachments, e-mail hoaxes, spam and other types of unsolicited e-mail to other people.
They are downloaded, installed, and run silently, without the user’s consent or knowledge.
Of all trojans, backdoor trojans pose the greatest danger to users’ PCs because they give their authors remote control over infected computers.
Downloaders are typically written in script languages such as VBS or Java Script.
Upon installation, backdoor trojans can be instructed to send, receive, execute and delete files, gather and transfer confidential data from the computer, log all activity on the computer, and perform other harmful activities. The primary purpose of downloaders is to install malicious code on a user’s computer. For example, they can be used to continually download new versions of malicious code, adware, or “pornware.” They are also used frequently used to exploit the vulnerabilities of Internet Explorer.
The following symptoms signal that your computer is very likely to be infected with CWS: CWS can seriously slow down your computer.
CWS can tamper with your Internet settings or redirect your default home page to unwanted web sites. CWS may swamp your computer with pestering popup ads, even when you're not connected to the Internet, while secretly tracking your browsing habits and gathering your personal information.
If your PC takes a lot longer than normal to restart or your Internet connection is extremely slow, your computer may well be infected with CWS.