Definition of "spoofing" [spoofing]

• Present participle of spoof. (verb)
• The action of the verb to spoof. (noun)
• A method of attacking a computer program, in which the program is modified so as to appear to be working normally when in reality it has been modified with the purpose to circumvent security mechanisms. (noun)
• Phishing. (noun)

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• "Maybe I'm not sure how to use the term spoofing, exactly."
• "Intruders can use the source address by falsifying, or what they call spoofing, such that it makes it very difficult for us in law enforcement to identify exactly where the particular attack is coming from."
• "Jimmy Fallon is back again spoofing Robert Pattinson in a tree."