Frederick Forsyth

"In Virginia, there is an agency bearing the bland name of Technical Operations Support Activity (TOSA). Its mission is to find and eliminate those so dangerous to the United States that they are on a short document known as the Kill List. Recently added to that list is a terrorist of frightening effectiveness called the Preacher, who radicalizes young Muslims abroad to carry out assassinations. Unfortunately for him, one of his targets is a retired...

"Former chief of British Secret Intelligence Adrian Weston gets a call in the night from the Prime Minister: the Pentagon, NSA, and CIA were hacked simultaneously. When the culprit is revealed to be a brilliant British teenager with no agenda, Weston has an idea: If he can do this to us, what can he do to our enemies?"--From the publisher's web site.