Keep Hackers from Stealing Information on your Home Computer
Before disposing of an old computer, remove all storage drives. Do not rely on the "delete" or trash function to remove files containing sensitive information.
Store personal files and back-up data securely in your home, especially if you have roommates, employ outside help or have service work done in your home. Be sure to turn on all security settings built into your computer, and password-protect your computer and files with sensitive personal or account data.
Be wary of downloading anything in an email until you can verify the authenticity of the source.