题目内容
_______ are malicious programs that come into a computer system disguised as something else such as a free computer game or screen saver.
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_______ is the process of coding information to make it unreadable except to those who have a special piece of information known as a key.
_______ scanning devices use fingerprints and iris scanners to identify individuals.
_______ encrypt connections between company networks and remote users, such as workers connecting from home, creating a secure virtual connection to a company LAN across the Internet.
_______ is concerned with protecting software and data from unauthorized tampering or damage.
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