CompTIA A+ Core 2 (220-1102) — Question 86

A user attempts to open some files, but a message appears stating that the files are encrypted. The user was able to access these files before without receiving this message, and no changes have been made within the company. Which of the following has infected the computer?

Answer options

• A. Cryptominer
• B. Phishing
• C. Ransomware
• D. Keylogger

Correct answer: C

Explanation

The correct answer is C, Ransomware, as it encrypts files and demands payment for decryption, which explains the sudden inaccessibility of the files. A Cryptominer (A) primarily focuses on using the computer's resources to mine cryptocurrency, while Phishing (B) is about tricking users into revealing personal information. A Keylogger (D) captures keystrokes but does not typically encrypt files.