LUKS (Linux Unified Key Setup) is a standard for disk encryption on Linux systems. It provides a secure method for encrypting storage devices, protecting sensitive data from unauthorized access. LUKS manages multiple user passwords and encryption keys, allowing for flexible and secure access control. It uses strong cryptographic algorithms and supports features like key management and passphrase changes without re-encrypting the entire disk. LUKS is commonly used for encrypting hard drives, SSDs, and removable media, making it a popular choice for both personal and enterprise data protection. Its compatibility with various Linux distributions ensures wide adoption and community support.