CORS (Cross-Origin Resource Sharing) definition in Cybersecurity

CORS (Cross-Origin Resource Sharing) is a security feature that allows web applications to request resources from a server on a different domain than the site currently in use. It is a mechanism to circumvent the same-origin policy, which prevents web pages from making requests to different domains. CORS defines a way for web servers and clients to decide whether to allow or deny such cross-origin requests.

How to Protect Your Network against CORS Misconfigurations

  1. Specify a precise list of domains that are allowed to access resources, instead of using '*' (wildcard).
  2. Regularly review and update CORS policies to ensure they are secure and up-to-date.