Select the appropriate security measures to overcome the identified computer threats

1) ANTIVIRUS

An antivirus program protects a computer against viruses .

Examples: virus, worm or Trojan horse.

2) HUMAN ASPECTS

Refer to the user and also the intruder of a computer system.

Example: Most common problem is the lack of achieving a good information security procedure.

3) DATA BACKUP

Data Backup is a program of file duplication.

Importance information can be backups daily, weekly or biweekly from a hard disk.

4) FIREWALL

Hardware or software which functions in a networked environment to prevent some communications forbidden by the security policy.

3 Types :

SCREENING ROUTERS	PROXY GATEWAY	GUARD
Simplest	Somewhat complex	Most complex
See only add & service protocol type	See full text of communication	See full text of communication
Screen based on connection rules	Screen based on behaviour proxies	Screens based on interpretion of message content

5) CRYPTOGRAPHY

Is a process of hiding information by altering the actual information into different representation.

Example, an APA can be written as I? X.

PLAINTEXT àEncryptionà CIPHERTEXT à Decryption à PLAINTEXT

5) ANTI-SPYWARE

Is a program placed on a computer without the user’s knowledge. It secretly collects information about the user.

Examples popular anti-spyware programs :

• Spybot Search and Destroy

• Ad-aware

• Spyware Blaster

Security Threats	Security Measures
MALICIOUS CODE	ANTIVIRUS AND ANTI-SPYWARE
HACKING	FIREWALL
NATURAL DISASTER	DATA BACKUP
THEFT	HUMAN ASPECTS
HACKING	FIREWALL