Tim Shorrock : Spies for Hire
Tim shorrock book on gangstalking is the best exposition of an growth industry which is outsourced espionage. he was not look at gangstalking as a phenomenon but was able to find evidencce that companies were winning conctracts for espionage and survaillance work. no in fact it was bigger than that. Hefoud incriinating work , like counter asuarveillance and role playing work.
His work is far reahing, he shows the use of intrusive technology