### Comment:
What is ransomware and how does it work?

### REPLY:
Ransomware is a highly effective tool used by cybercriminals to extort money from victims. It works by infecting the victim's computer or network, encrypting all files and rendering them useless. The attacker then demands a ransom payment in cryptocurrency, usually Bitcoin, in exchange for the decryption key. If the victim refuses to pay or fails to meet the deadline, the attacker may threaten to leak sensitive information or permanently delete the encrypted files.