Q1: A device that protects computer system from the fluctuations of electric voltage.
Q2: A device that provides backup electric power to the computer.
Q3: A malicious program misguided as some very important application and comes on the backs of other programs and is installed on a system without the user's knowledge.
Q4: The art and science of writing hidden messages in such a way that no one, apart from the sender and intended recipient, suspects the existence of the message, a form of security through obscurity.
Q5: The crime in which the attacker harasses a victim using electronic communication, such as e-mail or instant messaging (IM), or messages posted to a Web site or a discussion group.
