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Counter-Surveillance
Turning the Tables on Eavesdroppers

There can be a wide variety of reasons why you would wish to employ countermeasures to thwart unwanted attempts by cyber-crooks to access your computing data and mobile devices. The reasons for these attempts can be many (theft of financial, personal, and/or corporate data, etc.). Countermeasures can even include Inverse Surveillance, which turns the proverbial magnifying glass back on the spies themselves. Here are some of the services we offer:

  • Telephone debugging
  • Bug & Listening Device Sweeps
  • Computer Vulnerability Assessment
  • Audio Jamming & Noise Generators
  • Phone Wiretap Detection
  • GPS Device Debugging
  • Surveillance/Stalking Detection

When it comes to protecting yourself from an unwanted privacy invasion, you can't afford to take chances with an inexperienced investigator.

Regardless of the adopted strategy, J. Koerner Investigations offers a multitude of professional options, such as bug sweeping, covert listening devices, visual surveillance, Counter-Surveillance software, etc. Give us a call for a free quote.


J. Koerner Investigations
P.O. Box 4186
San Dimas, CA 91773
Tel: (909) 225-5448
Fax: (909) 267-9760