Final answer:
The incident described is a 'drive-by download' attack, where interacting with a deceptive pop-up leads to the installation of spyware on a user's system.
Step-by-step explanation:
The attack described where a pop-up window falsely claims that your computer has been infected and subsequently installs spyware when clicked on is known as a drive-by download. This form of attack leverages deceptive tactics to trick users into unwittingly downloading and installing software that is harmful or invasive. It does not require the user to intentionally download a file; merely interacting with the pop-up can trigger the download of spyware.
Hackers use a variety of methods to lure users into falling for these kinds of attacks. The scenario provided is an example of how attackers exploit web browsers and deceive users with alarming messages to facilitate the installation of malware without their knowledge or consent. It's crucial to be cautious and avoid clicking on suspicious pop-ups while browsing the internet.