The video points out things like: how do you spot an eTLD? There's .com, but what about .co.uk? .github.io? Do you know all the exceptions? There's basically a

The video points out things like: how do you spot an eTLD? There's .com, but what about .co.uk? .github.io? Do you know all the exceptions? There's basically a database of them and you just have to know them to correctly interpret the security origin of the domain.