Shutdown Precautions

If your computer is accessible to others, use a screensaver that requires a password to cancel, and shut it down when it is not in use or secure it with a system password.

Backup Precautions

Backup all your personal files daily. Important data should be backed up every time it is saved. If you have backups, a system failure is a nuisance; if you do not have backups, it will be a catastrophe.

Install and use backup software. You may download free backup software, purchase backup software, or use backup protection offered by your Internet service provider.
External hard drives are relatively inexpensive; use one to easily store backups.
To protect against fire, flood, etc. damage at your home that may damage your system and your backups, also use an off-site backup service.
Destroy unused backup information.

Deletion Precautions

When you delete a file on a drive, the file is not actually deleted. The operating system merely makes the space where the file is located available so other data may be saved there. Until the space is overwritten, the file may be recovered using some readily available programs. To permanently delete an important file, use a file shredding program that overwrites the file with 1’s and 0’s many times, thus making the file unrecoverable. If you are getting rid of a computer, you may also use a file shredder to completely erase all data from the drives so evildoers cannot recover the data.

Spam Precautions

Spam is unsolicited, junk email.

Delete spam without opening or reading it.
Never open attachments from unknown senders. Be careful of attachments from known senders, they may be unwittingly forwarding you infected files or their computers may be infected with a virus that is automatically sending infected messages to people in their address books. If you are not expecting a certain attachment, check with the sender before opening it. While any attachment may potentially contain a virus but you should be especially cautious of attachments that end with ".exe," ".pif," or ".scr" file extensions.
Install and use spam blocking software. You may download free spam blocking software, purchase spam blocking software, or use spam blocking protection offered by your Internet service provider.
Use anti-virus software that scans your email and attachments. On your web pages, use encrypting when you post your email address. It is very easy to do, jut go to http://w2.syronex.com/jmr/safemailto/