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Presentation transcript:

Quiz Review

Threats to a computer network A virus is a piece of software that can replicate itself and infect a computer without the permission or knowledge of the user. A virus can only spread when it is transmitted by a user over a network or the Internet, or through removable media such as CDs or memory sticks.

Threats to a computer network SPAM is electronic junk email; SPIM is spam sent via instant messaging systems; SPIT is Spam over Internet Telephony; Spoofing is an attack in which a person or program masquerades as another; Phishing (pronounced “fishing”) is a common form of spoofing in which a phony web page is produced that looks just like a legitimate web page.; Pharming (pronounced “farming”) is an attack in which a hacker attempts to redirect a website's traffic to another, bogus website.

Threats to a computer network Spyware is software that is secretly installed on a computer without the user’s consent. It monitors user activity or interferes with user control over a personal computer; A keylogger is a software program that is installed on a computer, often by a Trojan horse or virus. Keyloggers capture and record user keystrokes; and Adware is software which automatically plays, displays, or downloads advertisements to a computer.

How to prevent viruses and spyware Never click on links in emails; Never open the attachments; Do not give out personal information; Set secure passwords and don't share them with anyone; Keep your operating system, browser, anti-virus and other critical software up to date; Verify the authenticity of requests from companies or individuals by contacting them directly; Pay close attention to website URLs; For e-Mail, turn off the option to automatically download attachments; and Be suspicious of unknown links or requests sent through email or text message.