You will never prevent people from downloading your html and rendering it, correctly or incorrectly. Attackers will just pull in an open source browser engine t

You will never prevent people from downloading your html and rendering it, correctly or incorrectly. Attackers will just pull in an open source browser engine that supports mobile. Our smartphones were not made with security in mind. They are literal spyware. I suspect the more likely use of OS-based frame busting is to circumvent ad blocking browsers. This is even the use case he mentions as an example.