Tapping of telephone is a very common practice for data theft. Bugs in telephone is generally placed by a virus & using this your sensitive data & classified business information can be at risk.
TSCM services is the sure shot answer to this problem. Tapping of telephone can be detected & removed by TSCM services.
With the help of Telephone Analyzer, the telephone instruments and lines are sanitized of taps, transmitters, microphones, recorders etc. This is a highly skilled job as detection depends more on the skills and analytic capability of the operator handling the equipment.