Mack signs into his laptop and gets a message saying all his files have been encrypted and will only be released if he sends money to the attacker.What kind of software did this?

A) Spyware
B) Antivirus
C) Spam
D) Ransomware

Ransomware

Malicious software that encrypts the victim's files, with the attacker then demanding a ransom from the victim to restore access to the data upon payment.

Encrypted

The process or state of converting information or data into a code, especially to prevent unauthorized access, ensuring data is secure during transmission or storage.

Attacker

An individual or entity that attempts to gain unauthorized access to computer systems, networks, or data, often with malicious intent.