Corporate espionage is becoming more common, with bribery and bugging playing a large part in businesses keeping up with their competition.
Eavesdropping on a rival is expensive, but trying to prevent it can cost even more.
The BBC's Joe Lynam spoke to Andy Williams, head of security for banking firm Nomura, and Crispin Sturrock from the WhiteRock, which works to prevent corporate espionage. (video)
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