Why do I get "Access Restricted" when visiting a website?

If you access a site that is considered malicious or risky, the web extension will prevent you from accessing the website and will redirect you to a warning page. The following image shows an example of how the display will appear when trying to access such a site:

If you trust the website and believe you received the message in error, you can click on I accept the risk, continue to the site to bypass the message.