What is a Type of malware that prevents or limits users from accessing their system by locking the users files?

A type of malware that prevents or limits users from accessing their system by locking their files is known as ransomware. It typically encrypts the user's data and demands a ransom payment to restore access. Ransomware attacks can be devastating, leading to data loss and significant financial implications for individuals and organizations. Users are often advised to maintain backups and employ security measures to mitigate the risk of such attacks.