Tham khảo tài liệu 'how to do everything with windows xp home networking- p4', công nghệ thông tin, quản trị mạng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 129 NOTE NOTE CHAPTER 5 Keep Your Internet Connections Secure Network Antivirus When the number of protected systems rises above 10 many organizations opt for network antivirus applications. These applications differ from the desktop versions in that there is usually a server program that maintains settings and updates for all the units. These settings and updates are downloaded into each system over the network. Antivirus Services Some e-mail services offer antivirus scanning as a feature of their service. Web mail providers such as Hotmail and Yahoo scan user s e-mail for viruses and spam helping ensure their users get clean e-mail. Use Antispyware Applications to Terminate Spyware Privacy gurus have made much of the spyware revolution in recent months. There is now an arms race of sorts going on between online marketers and privacy advocates. Software bordering on malicious has been spread around the Internet and software to protect your systems has sprung up to meet it. What Spyware Does to Your Computer These programs range from simple tracking files called cookies to virus-like applications that spread copies of themselves to other computers and take control of your system directing you to web sites you never intended. Some even partner with viruses and worms to further propagate themselves. Many sites use cookies to keep track of your preferences for formats and colors or your name and address data. Blocking all cookies might result in the site not being usable or at the least hamper its ability to retain your preferences. You will most likely need to find a balance between privacy and usability. Determine Your Spyware Risk Level If you regularly browse mainstream sites like those of the major news outlets and periodicals you will probably not be exposed to more than third-party cookies designed to record your clickstream. A clickstream is the path you take as you surf the web. Third-party cookies can keep track of your path through a web site and record .
