https://medium.com/@justin.schuh/securing-browsers-through-i...

Then try to work back either Edge's or Chrome's approach to security to specific Safari features and design.

The Chrome security team is probably the most sophisticated software security team in the industry (lest you think I'm in the tank for Google, I'd say the iOS platform security team is a close 2nd --- and, to be clear: Safari is a different story on iOS).