CompTIA Tech+ (FC0-U71)Applications and SoftwareHard
A user is experiencing issues where their web browser frequently redirects them to unwanted advertising sites and changes their homepage without permission. They have already run a basic antivirus scan, which found nothing. What is the MOST likely type of application causing this behavior?
- ASpyware
- BRootkit
- CRansomware
- DTrojan
Show answer & explanationAnswer & explanation
Correct answer: A. Spyware
Frequent redirects, homepage changes, and unwanted ads are classic symptoms of spyware, specifically adware, often designed to evade basic antivirus detection. Trojans often facilitate other malware, rootkits hide, and ransomware locks data.
Why the other options are wrong
- B. A rootkit is designed to hide its presence and the presence of other malware, not to overtly redirect browsers or change homepages.
- C. Ransomware encrypts user data and demands payment for its release; it does not typically cause browser redirects or homepage changes.
- D. A Trojan is a type of malware that disguises itself as legitimate software. While it can deliver other payloads, the described *symptoms* (redirects, homepage changes, ads) are more directly characteristic of spyware/adware.
Spyware (Adware)
Software that aims to gather information about a person or organization without their knowledge and can send this information to another entity. Adware is a common form of spyware focused on displaying unwanted advertisements.
- Monitors browsing behavior and collects personal data.
- Often causes pop-up ads, browser redirects, and changes to browser settings.
- Can be difficult to detect with standard antivirus due to its 'legal' but intrusive nature.
Memory trick: Each malware has its own nasty way of showing up.