Exam 9: Network and Internet Security

____________________ often find their victims online- for instance, someone in a chat room who makes a comment or has a screen name that they do not like.

A firewall is a security system that essentially creates a barrier between a computer or network and the Internet in order to protect against unauthorized access.

Like a computer virus, a ____ is a malicious program designed to cause damage.

Phishing schemes use legitimate-looking e-mails to trick users into providing private information. _________________________

Denial of service attacks are usually of insignificant cost in terms of business lost.

____, the most commonly used type of possessed knowledge, are secret words or character combinations associated with an individual.

Digital certificates are obtained from a(n) ____________________ and typically contain the name of the person, organization, or Web site being certified along with a certificate serial number, an expiration date, and a public / private key pair.

A type of computer infection occurs when a hacker breaches a computer system in order to delete data, change data, modify programs, or otherwise alter the data and programs located there. _________________________

A(n) ____________________ is a unique digital code that can be attached to a file or an e-mail message to verify the identity of the sender of a document.

How does a virtual private network (VPN) provide security?

A(n) denial of service (DoS) attack is an act of sabotage that attempts to flood a network server or Web server with so many requests for action that it cannot handle legitimate requests any longer. _________________________

How do firewalls work?

-The green color of the Address bar in the accompanying figure indicates that the site is using a valid ____ SSL certificate.

What are access control systems used for?

When a digitally signed document is received, the recipient's computer uses the sender's ____ key to verify the digital signature.

A ____ is a malicious program that masquerades as something else-usually as some type of application program.

The term ____ refers to accessing someone else's unsecured Wi-Fi network from the hacker's current location (such as inside his or her home, outside a Wi-Fi hotspot location, or near a local business).

A computer that is controlled by a hacker or other computer criminal is referred to as a ____.

____________________ access refers to individuals gaining access to a computer, network, file, or other resource without permission.

Cuts or other changes to a finger may prevent access via a(n) keystroke reader. _________________________