Keep the "Install from Unknown Sources" setting disabled unless you are a developer or absolutely certain of the file's integrity.
On Android devices, "Security" is typically a system-level application responsible for managing device health, privacy, and protection. Version is frequently associated with performance optimization tools, such as: security v.20.03.25.apk
If you have a Xiaomi, POCO, or Redmi device, verify the latest versions through the official Xiaomi Support portal rather than searching for raw APK files. Keep the "Install from Unknown Sources" setting disabled