Strict Site Isolation with Google Chrome

Starting with version 63, Chrome has a new security feature named Strict Site Isolation.  Below is an explanation of this feature:

Google’s site isolation feature improves security for Chrome browser users. When you enable site isolation, content for each open website in the Chrome browser is always rendered in a dedicated process, isolated from other sites. This creates an additional security boundary between websites.

To enable this option, use the URL chrome://flags/#enable-site-per-process and click the enable button.

To use a command-line shortcut, use the switch "--site-per-process".