Locker Ransomware is a type of malicious software that locks users out of their files or entire systems, making them inaccessible. Once it infects a device, it typically displays a ransom note demanding payment in exchange for restoring access. This can cause significant disruption to individuals and organizations alike. The ransomware often spreads through phishing emails, malicious downloads, or vulnerabilities in software. To protect against Locker Ransomware, users should regularly back up their data, keep software updated, and be cautious when opening unknown attachments or links.