Up-to-Date System

Make sure your computer's operating system is patched with the latest security updates provided by the manufacturer.

Microsoft Windows users may go to the Microsoft Windows Update site.
Apple Macintosh users may click the Apple Icon in the top-left of the screen and select Software Update.

Spyware Removal

Spyware can accumulate on a system just by browsing the web. Systems should be checked for spyware no more than every 30 days. CIS recommends Spybot Search & Destory and Malwarebytes Anti-Malware for spyware-removal.

Antivirus Software

Separately from spyware scans, users are required to run active anti-virus software that is constantly running on a system. More information can be found on the AntiVirus page.

Firewall

In addition to both Antivirus and Spyware removal software, a personal firewall is required on all systems. Firewalls are provided by default on all Apple Mac OS and Microsoft Windows computers.

Microsoft Windows users may verify that their firewall is enabled by using the procedure found here. Follow the steps under To turn on Windows Firewall.
Apple Mac OS X users may enable their firewall by using this procedure.

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