Local Security Authority (LSA)

The Local Security Authority (LSA) is a core component of Windows operating systems that manages security functions, such as user authentication and access control. It verifies user identities when they log in, issues security tokens, and enforces security policies. Essentially, the LSA acts as the system’s security gatekeeper, ensuring that only authorized users can access specific resources, and it helps protect the system from unauthorized access or security breaches. Its proper functioning is vital for maintaining the integrity and security of a Windows computer.