Preventing Computer Risk

What is an antivirus Program?

• Identifies and removes computer viruses, and also, protects the computer against worms and Trojan horses’

What is a virus signature

• A virus signature is an algorithm or hash that uniquely identifies a specific virus.

How does an antivirus program vaccinate a program file?

• Recorded information about program such as file size and creation date.
• Attempts to remove any detected virus.
• Quarantines infected files that it cannot remove.
• Uses information to detect if virus is trying to reach a certain file or system.

Recovery disk

• Removable disk that contains uninfected copy of key operation system commands that enables computer to restart. Also called rescue disk.

What is unauthorized access and how is it achieved?

• Use of a computer or network without permission.
• Hackers/Crackers usually break into computer by connecting to it and then logging in as a legitimate.

What is a firewall?

• Security
• Program that protects personal computer and its data from unauthorized instructions.
• Monitors transmissions o and from computer.
• Informs you of attempted access.

What are ways to protect your computer?

• Disable file and printer sharing on Internet connection.

Use online security service web site that evaluates computer to check for web and e-mails.

• Disable unauthorized access and use.

What is a username?

• Unique combination of characters that identifies user.
• Password is private combination of characters associated with the username.

What is a possessed object?

• Item that you must carry to gain access to computers or facility.
• Often used with numeric password called personal identification number.

What is callback system?

• Users connects to computer only after the computer calls that user back at previously established telephone number.
• Some networks utilize callback systems as an access control method to authenticate remote or mobile users.
• Callback system work best for users who regularly work the same remote location.

What is a license agreement?

• The right to use software
• Single user license agreement allows user to install software on one computer, make backup copy, and sell software after removing from computer.
• What are some other safeguards against software theft?

• Prediction activation allows user to input product identification number online or by phone and receive unique installation identification number.