CompTIA A+ Core 2 (220-1202)SecurityMedium
A user reports that their mobile phone is behaving erratically: apps are crashing frequently, the battery drains unusually fast, and there are strange pop-ups appearing even when no browser is open. They also notice that unfamiliar apps have been installed without their consent. The device's security software is not detecting any viruses. What is the MOST likely cause of these issues?
- AMalicious app (malware)
- BOutdated operating system
- CHardware malfunction
- DCorrupted operating system files
Show answer & explanationAnswer & explanation
Correct answer: A. Malicious app (malware)
The combination of erratic behavior, rapid battery drain, strange pop-ups outside the browser, and unauthorized app installations are strong indicators of a malicious application (malware) on the mobile device. While OS corruption or hardware issues could cause some symptoms, the unauthorized app installations and pop-ups are specifically characteristic of malware.
Why the other options are wrong
- B. An outdated OS might have security vulnerabilities but wouldn't directly cause unauthorized app installs or strange pop-ups on its own.
- C. Hardware malfunction might cause crashes or battery drain, but not unauthorized app installs or pop-ups.
- D. Corrupted OS files might cause crashes but typically not unauthorized app installs or pop-ups.
Mobile Malware
Malicious software designed to target mobile devices, often leading to data theft, unauthorized access, or device disruption.
- Can be distributed via app stores, phishing, or malicious websites.
- Symptoms include rapid battery drain, performance issues, unauthorized data usage, strange pop-ups, and unexpected app installs.
- Often aims to steal personal information, send premium SMS, or gain control of the device.
Memory trick: Mobile threats range from bad apps to lost devices.