Here is a link to an article by my friend and colleague Kevin Murray offering a some tips and an introduction to espionage countermeasures for building and facility managers. When the serious possibility of espionage arises, building managers and even security managers may not know where to turn for help.

How to Handle Counterespionage 3/19/2014 by Kevin D. Murray 

You know everything about managing facilities, but a request from management to debug your building can throw even the most seasoned FM for a loop. With the help of an outside professional, you can ensure speech privacy and business security. 
Business espionage is a growing concern, yet it’s mistakenly thought of as an IT department problem. The reality is that the information IT protects is vulnerable to theft long before it is put into the computer – 
 

[Read the full article at buildings.com]