Find the definition of the most commonly used cyber security terms in our glossary below.

What is Whitelisting in cyber security?

Whitelisting is a security practice where a list of trusted entities is created and used to allow access to a particular privilege, service, or access within a system. In other words, only items on the whitelist are granted permission, while all others are automatically blocked by default. It can apply at various levels within a system, from network firewalls and email servers to the execution of applications or scripts within a system. This control method is pro-security, reducing the chance of exposure to potential threats, but can be limiting and may require regular maintenance to prevent disruption of legitimate activities.