Four simple rules for keeping your Windows operating system secure from OSNews.com.
Rule 1. Use a limited user account for normal work, and for connection to the net. Never connect from an account with administration privileges.
Rule 2. Connect to Broadband via an ADSL Router, never just an ADSL modem. Either ask your provider to supply Broadband with an ADSL Router, or buy a combined modem/router yourself.
Rule 3. Only use secure software. First, don't use the chronically insecure Microsoft Explorer and Outlook; get (free) Mozilla Firefox (Web) and Mozilla Thunderbird (Email). Also get the Firefox Spoofstick plugin and Adblock to guard against phishing.
Rule 4. Keep as much personal information as possible off the machine, on paper.