An Italian sergeant, who looks young enough to still be at school, is painstakingly scanning emails that have been automatically quarantined because they contain buzzwords like "Nato secret".
A glance over his shoulder reveals emails to and from Sarajevo, Baghdad and Kabul, evidence of Nato's newly expanded horizons.
They look innocuous enough and most of the time, explains the sergeant, it is a false alarm but sometimes even quite senior officers have transgressed and they get a serious talking to about online security.
Serious threats
When it comes to cyber espionage, Nato officials refuse to say who they think is behind the attacks, in fact our escorts can hardly wait to steer us off the subject.
Nato computers are under constant attack
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