Is an Antivirus Program included with Windows 7?
Windows 7 does not include an antivirus program, but Microsoft Security Essentials is available as a free download. This will help guard against, viruses, spyware, and malware.
In addition, Microsoft recommends that you use a pop up blocker with your browser, keep the firewall enabled, and keep the windows security files up to date. From time to time, clear out the browsing history and delete the internet cookies.
Feel free to consult with family, friends, or coworkers for recommendations regarding purchased antivirus software.