________ [ VN ] ( computing 计 ) to put information into a special code, especially in order to prevent people from looking at it without authority
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_________ [ VN ] ( computing 计 ) to change information that is in code into ordinary language so that it can be understood by anyone
__________ is computer software that secretly records information about which websites you visit.
_______is a type of computer software that collects information about a user's browsing patterns in order to display relevant advertisements in his or her Web browser.
_________is a file which is attached separately to a message that you send to someone, such as a graphic, a program, a sound or whatever.