Microsoft has introduced Smart App Control (SAC) with the rollout of Windows 11 22H2, enhancing its security framework by proactively blocking untrusted or unknown applications. Users must perform a fresh installation of Windows to utilize this feature. Unlike traditional antivirus solutions that operate on a reactive basis, SAC employs a "Guilty until proven innocent" approach, assessing applications against Microsoft's Intelligence Security Graph and verifying digital signatures to determine legitimacy. If an application is deemed potentially harmful or unsigned, it is blocked by Windows Security.