Application control

Application control is a cybersecurity practice that regulates which software applications are permitted to install, run, or execute on endpoints, servers, and other devices within an organization's IT environment. By enforcing defined policies, it significantly reduces the attack surface and acts as a critical barrier against unauthorized software, malware, ransomware, and other cyber threats that could compromise system integrity or data confidentiality.

Application control is typically implemented through two main approaches: blacklisting, which blocks known malicious or undesirable applications, and whitelisting, which permits only explicitly approved software to run while denying everything else by default. Whitelisting is considered the more robust methodology, as it provides protection even against zero-day exploits and unpatched vulnerabilities. By ensuring only vetted and authorized software operates across the infrastructure, application control helps maintain operational stability, supports regulatory compliance, and serves as a cornerstone of a resilient cybersecurity posture.