SECURITY MEASURES

Security measures are measures taken as a precaution (taken beforehand)

against theft or espionage or sabotage or possible danger or failure. Usually

we use antivirus, cryptography, firewall and data backup to protect sensitive

information.

 Apply the correct security procedures. ANTIVIRUS, ANTI-

SPYWARE, CRPTOGRAPHY, FIREWALL, DATA BACKUP, 

AND HUMAN ASPECTS.

Anti-virus=

-is a utility program that the protects the computers against viruses by identifying

and removing computer viruses found in the computer memory, computer storage

or incoming e-mails files. Examples of antivirus are Norton Antivirus, AVG, Kaspersky, Bitdefender and Not32.

Anti-spyware=

-Is a utility program that protects the computers against spyware.

-Spyware is software or computer program that is designed secretly

record and report an individual`s activities on the internet. Spyware usually

enters your system through the internet, sometimes when you open e-mail or

download software especially shareware and freeware.

-Examples of anti-spyware program are Spybot Search and Destroy, Ad-aware 

and Spyware Blaster.

Firewall=

-A firewall is a software or hardware that secures a network, shielding, it from

access by unauthorized users.

-We use fire wall to prevent hacking (unauthorized access is the use of a computer

or network without permission)

Backup=

-Is utility program that makes a copy of all files or selected files that have been 

saved onto a disk.

-We backup our data to ensure that our data can still be used if the original is

corrupted and prevent our files from malicious program – virus, Trojan horse, 

worm, logic bomb, etc.

-Backup data is important when original data is corrupted.

Note: When data on a computer becomes corrupt, it is spoilt and cannot be 

properly used because it has become change in wrong ways.

Cryptography=

-Is a process of transforming plaintext into ciphertext then back againt.

-Encryption is a process of converting plaintext into ciphertext. Decryption 

is the process of converting ciphertext into plaintext.

-An encryption key is a formula that the sender of that the data uses to encrypt

plaintext. A decryption key is a formula that the recipient of the data uses to 

decrypt ciphertext.

-Until recently, encryption was used only by intelligence service, militaries, and banks.

We use cryptography to secure the information and prevent hacking or unauthorized

access.