SECURITY MEASURE

What is security measure?

The precautionary measures taken toward possible danger or damage.

DATA BACKUP

•A data backup is the result of copying or archiving files and folders for the purpose oF

being able to restore them in case of data loss.

•Data loss can be caused by many things ranging from computer viruses, hardware

failures, file corruption, system failure or theft.

•If you are responsible for business data, a loss may involve critical financial, customer,

and company data.

•If the data is on a personal computer, you could lose financial data and other key files,

pictures, music and others that would be hard to replace.

CRYPTOGRAPHY

*Cryptography is technology of encoding information so it can only be read by authorized

individuals.

*Encryption is process of converting readable data into unreadable characters to

prevent unauthorized access.

*Decryption is process to recorded encrypted data.

How…

-To read the data, you must decrypt it into readable form.

-The unencrypted data is called plain text.

-The encrypted data is called cipher text.

-To encrypt, plain text converted into cipher text using an encryption key.

Importance…

-The process of proving one's identity.

-Ensuring that no one can read the message except the intended receiver.

-Assuring the receiver that the received message has not been altered in anyway

from the original.

-A mechanism to prove that the sender really sent this message.

ANTI-VIRUS

•Anti-virus software is a program or set of programs that are designed to

prevent, search for, detect and remove software viruses and other malicious software

like worms, Trojan horses, adware and more.

•If and when a virus is detected, the computer displays a warning asking

what action should be done, often giving the options to remove, ignore, or move the file to

the vault.

•If a virus infected a computer without an antivirus program, it may delete

files, prevent access to files, send spam, spy on you, or perform other

malicious actions.

•Examples: Norton anti-virus, AVG anti-virus, Kaspersky anti-virus

ANTI-SPYWARE

•Anti-spyware is a type of software that is designed to detect and remove unwanted

spyware programs.

•Anti-spyware software can be used to find and remove spyware that has already been

installed on the user's computer.

•OR it can act much like an anti-virus program by providing real-time protection and

preventing spyware from being downloaded in the first place.

•Examples :

 -Spyware Blaster

-Spy Sweeper

FIREWALL

•A firewall is a system designed to prevent unauthorized access to or from a private

network.

•A firewall can be implement either through hardware or software form, or a combination

of both.

•Firewalls prevent unauthorized Internet users from accessing private networks

connected to the Internet, especially intranets.

•All messages entering or leaving the intranet (i.e., the local network to which you are

connected) must pass through the firewall, which examines each message and blocks those

that do not meet the specified rules/security criteria.

•Rules will decide who can connect to the internet, what kind of connections can be made,

which or what kind of files can be transmitted in out.

PHYSICAL ACCES CONTROL

•Lock your laptop whether you're at home, in a dorm, in an office, or sitting in a coffee

shop, use a security device, such as a laptop security cable.

•Lock doors and windows, usually adequate to protect the equipment.

•Put the access code at the door to enter the computer room or your office.

•Put the CCTV (closed-circuit television) in your office or computer room.

•Make a policies who can access the computer room or your data center.