But how can it be faked? You can upload a fake FB account but it's new. Country X can say 'that account wasn't there 2 years ago'. Nor can agencies set up fake

But how can it be faked? You can upload a fake FB account but it's new. Country X can say 'that account wasn't there 2 years ago'. Nor can agencies set up fake accounts over time as they need to know the faces of future spies to create their fake front over time and that's not possible unless you choose spies from birth.