Trust Lockdown by White Cloud Security is an application execution control system delivered as SaaS that operates at the kernel layer to validate and control which applications and scripts can run on Windows and Linux systems. It implements a default-deny security posture using trust-listing technology that validates executables, scripts and libraries against approved lists before allowing them to run. The solution utilizes five concurrent secure hash algorithms for application identification, works with both cloud and appliance-based deployments, and functions as part of a defense-in-depth security strategy, preventing execution of unauthorized applications, scripts, and malware whether online or offline.