12.2.1. Basic protection

You must follow these golden rules in order to keep your machine reasonably safe:

• Don't install, run, or open software of dubious origin (e.g. warez found on peer-to-peer networks, or programs hosted on untrusted web sites). This includes suspicious email attachments and macros on word processing programs.
• Use an anti-virus software, updated daily. Make frequent scans of your machine and external hard drives.
• Use one or more anti-malware programs.
• Filter network traffic with a personal firewall and deny all unknown connections.
• Install OS vendor patches. Keep all your software up-to-date, and keep yourself informed of the latest vulnerabilities.
• Use a screen lock when you are not physically in front of your computer and there are strangers around.
• Use strong passwords. Don't write them down in easy-to-find places.
• If you use a Wi-Fi connection, enable WPA on your access point.