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The correct answer is D.

OBJ-4.4: Point-of-sale malware (POS malware) is usually a type of malicious software (malware) that is used by cybercriminals to target point of sale (POS) and payment terminals with the intent to obtain credit card and debit card information, a card’s track 1 or track 2 data and even the CVV code, by various man-in-the-middle attacks, that is the interception of the processing at the retail checkout point of sale system. Ransomware is a type of malware that threatens to publish the victim’s data or perpetually block access to it unless a ransom is paid. Keyloggers are a type of monitoring software designed to record keystrokes made by a user. These keyloggers can record the information you type into a website or application and send it back to an attacker. A rootkit is a malware class that modifies system files, often at the kernel level, to conceal its presence.

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