Which of the following best describes the behavior of spyware?

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Spyware is primarily designed to monitor and collect information about a user's activities without their consent. The primary behavior of spyware involves tracking user actions—this can include logging keystrokes, monitoring browsing habits, and gathering personal information such as login credentials or financial details. Once this data is collected, it is typically transmitted to attackers who can exploit the information for various malicious purposes, including identity theft or unauthorized access to accounts.

The nature of spyware makes it distinct from other types of software and tools. It does not engage in defensive behaviors or provide security measures. Instead, its purpose is invasive, focusing solely on data collection for the benefit of an attacker. This characteristic is what sets it apart from options like actively defending against threats, encrypting files, or providing legitimate application updates, which focus on protection and legitimate user assistance.