Unauthorized access
Install anti-virus software and
updates on a regular basis

In order to protect your computer and its contents and to stop unauthorized access to your computer, you should:
Install anti-virus/anti-spyware software programs, a personal firewall, and security patches on your computer
Run the anti-virus/anti-spyware software programs before downloading programs or software or opening emails
Install and regularly update anti-virus/anti-spyware software programs and security patches