Technical Surveillance Surveys are seen as the first line of defence in National, Business and security operations. Most sensitive departments have a Technical Countermeasures Team (sweep team) on contract to clear main offices and other locations where sensitive negotiations will take place. In these days of high-speed technology development, the incidences of information theft is becoming more prevalent and to those who wish to break the law, Information Brokering is Big Business. As the tools of the trade have become more readily available, so too have the professionals with the knowledge and practical experience to use them. It is also not unknown for certain governments to assist their own nations’ commerce by indulging in, or tacitly supporting industrial espionage.