CompTIA A+ Core 2 (220-1202)SecurityMedium
A user reports that their web browser is displaying frequent pop-up advertisements, even on legitimate websites, and sometimes redirects to unexpected pages. They also notice new, unfamiliar toolbars installed. Which type of malware is MOST likely causing these symptoms?
- ATrojan
- BWorm
- CSpyware
- DAdware
Show answer & explanationAnswer & explanation
Correct answer: D. Adware
Adware is specifically designed to display unwanted advertisements, often through pop-ups, and can sometimes redirect browser traffic or install unwanted toolbars.
Why the other options are wrong
- A. A Trojan disguises itself as legitimate software but performs malicious actions, not primarily pop-up ads.
- B. A worm is a self-replicating malware that spreads across networks, not typically focused on browser ads.
- C. Spyware collects information about the user without their knowledge, focusing on data exfiltration rather than ads.
Adware
Adware is software that automatically displays or downloads advertising material (often unwanted) when a user is online.
- Often bundled with free software.
- Can manifest as pop-up ads, unwanted toolbars, and browser redirects.
- While annoying, it is generally less malicious than other malware types, though it can impact performance and privacy.
Memory trick: Malware makes messes: worms wander, Trojans trick, spyware spies, adware advertises.