2. Security measures mean the precautionary measures
taken toward possible danger or damage. There are 6
types of security measures :-
1) 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.
2) CRYPTOGRAPHY
-Cryptography is a process of hiding information by altering
the actual information into different representation.
3) ANTIVIRUS
-An antivirus program protects a computer against viruses by
identifying and removing any computer viruses found in the
computer memory.
3. 4) ANTI-SPYWARE
-Spyware is a program placed on a computer without the
user’s knowledge. It secretly collects information about the user.
5) FIREWALL
-Firewall is a piece of hardware or software which functions in a
networked environment to prevent some communications
forbidden by the security policy.
6) HUMAN ASPECTS OF SECURITY MEASURES
- Human aspects refer to the user and also the intruder of a
computer system. It is one of the hardest aspects to give
protection to.
4. -Authentication is a process where users verify that
they are who they say they are.
TWO TYPE AUTHENTICATION :-
1) CALLBACK SYSTEM
2) BIOMETRICS DEVICES
5. -A callback system connects a user to a computer only after the
computer calls the user back at a previously established
telephone number.
To started the callback system :-
1)The user calls the computer and then enter the
correct username and password.
2)The computer instructs the user to hang up and then
calls the user back.
6. -Biometrics is the science and technology of measuring
and analyzing biological data.
-FINGERPRINTS RECOGNITION
They are also readily accessible and
require little physical space either for the
reading hardware or the stored data.
7. -FACE RECOGNITION
Uses distinctive facial features, including
upper outlines of eye sockets, areas around
cheekbones, the sides of the mouth and the
location of the nose and eyes.
- VOICE RECOGNITION
The idea is to verify the individual speaker
against a stored voice pattern, not to
understand what is being said.
- SIGNATURE DYNAMIC
Based on an individual's signature, but
considered unforgettable because what is
recorded isn't the final image but how it is
produced .
8. - Security Measures is very important to protect
our computer data .
-Biometric technology is now being used in
almost every area. Not only that, but various
types of biometric systems are being used to
achieve various functionalities.
