Watching the watchers

New-look spooks

The tools of global spycraft have changed

And so has the world in which they are used, says Shashank Joshi

Dead drop drops dead

Ubiquitous technical surveillance has made spying more difficult

But human intelligence is still vital

Dot-dot-dot dashed

Signals intelligence has become a cyber-activity

That has significantly changed its focus

Old-school broadcasts

Sometimes the old ways of espionage are the best

Encrypted messages on the radio are still going strong

SpookGPT

Artificial intelligence can speed-sort satellite photos

Could it also recruit an agent?

Intelligence, Inc

Private firms and open sources are giving spies a run for their money

There is plenty of co-operation, too

Spycraft

Sources and acknowledgments