> Is it just that he's riding a fine line and not disclosing classified information Yes, at least in this talk he's very careful only to disclose what can be i

> Is it just that he's riding a fine line and not disclosing classified information Yes, at least in this talk he's very careful only to disclose what can be inferred from already public information (e.g. Snowden leaks). People from his former line of work are kind of used to this, I guess, as they probably cannot even discuss every detail of what they're doing with all of their own colleagues during lunch breaks.