The world of espionage is facing tremendous technological, political, legal, social, and commercial changes. The biggest disruptive force is technological. Traditional spycraft has always relied on deception based on identity. Spotting, developing, recruiting, running, and servicing intelligence sources involves concealing what you are doing.
Not anymore. A cover identity that would have been almost bulletproof only 20 years ago can now be unraveled in a few minutes.