Which of the following malware types typically allows an attacker to monitor a user's computer, is characterized by a drive-by download, and requires no user interaction?

A virus requires a host file and typically needs a user to execute an infected file in order to propagate, which contradicts the no-user-interaction characteristic.

A logic bomb is dormant code that triggers when a specific condition is met and is not characterized by monitoring activity or drive-by delivery.

Spyware silently runs in the background to collect keystrokes, browsing habits, credentials, or screen captures and transmit them to an attacker. It is frequently installed via drive-by downloads - malicious scripts embedded in web pages that exploit browser or plugin vulnerabilities and execute automatically when the page is visited, requiring no explicit user consent or action.

Adware displays advertisements and is usually installed alongside software the user intentionally downloads, requiring some level of user interaction.