SECURITY MEASURES

Security measures mean the precautionary measures taken toward possible danger or damage. There are 6 type of security measures.
DATA BACKUP -Data Backup is a program of file duplication. Backups of data applications are necessary so that they can be recovered in case of an emergency.
CRYPTOGRAPHY-Cryptography is a process of hiding information by altering the actual information into different representation, for example, an APA can be
written as I? X.
ANTIVIRUS-An antivirus program protects a computer against viruses by identifying and removing any computer viruses found in the computer memory, on storage media or incoming e-mail files.
An antivirus program scans for programs that attempt to modify the boot program, the operating system and other programs that normally are read from but not modified.
ANTI-SPYWARE -Spyware is a program placed on a computer without the user’s knowledge. It secretly collects information about the user.
An anti-spyware application program sometime called tracking software or a spybot is used to remove spyware.
Among of the popular anti-spyware programs are:
• Spybot Search and Destroy
• Ad-aware
• Spyware Blaster
FIREWALL-Firewall is a piece of hardware or software which functions in a networked environment to prevent some Communications forbidden by the security policy.

http://en.wikipedia.org/wiki/Security
http://www.jmu.edu/computing/security/
http://search.yahoo.com/search?ei=computer+security+measures&rs=
http://www.casdn.neu.edu/~etam/military/FM19-30/93011ch.pdf
http://search.yahoo.com/search;_SECURITY+MEASURES&y=Search