1. Stay calm and don’t appear uneasy. Continue to act as if nothing has happened.

2. Determine if you or a family member is a potential target. Answer the following questions. Is there anyone in the family who is engaged in confidential work? Is the information worth investigating yourself? Is it possible that your loved one may think you are unfaithful?

3. Keep an eye on the phone when chatting on the phone. Watch for changes in sound, mute, intermittent sounds or other unfamiliar sounds. Amateur eavesdropping devices often produce this type of interference.

4. Listen to the phone when you are not on the phone and pay attention to the sound from your own phone. If you hear the above noise, it means that the phone may be bugged. Some bugs use amplifiers to eavesdrop on other people’s speech within a certain range.

5. Check the locks. If they suddenly become loose or have been stabbed, they may have been operated recently.

6. Keep an eye out for things in your home or office. New items with bugs are often placed in places where the victim is unaware. Common new items are radios, alarm clocks, sprinklers, photo frames and light bulbs, etc. You should also be aware of gifts that may contain eavesdropping devices. Common eavesdropping gifts are power adapters, pagers, pens, water dispensers, calculators, briefcases and CD players. Be on the lookout for any interference with radio or television signals in your car, home or office. Eavesdropping devices can release signals that interfere with radio and television sets.

7. Investigate things that are slightly misplaced. Include smoke detectors, electrical outlets, vents, furniture and electrical wiring boards, etc. Scan the ceilings and floors of your residence or office. Small discoloration on the ceiling or a bulge in the floor is often where small cameras are installed. Fragments near walls or on the floor, broken tiles or sagging ceilings are all signs that have just been moved and may have hidden the camera.

8. Recall the calendar. Check maintenance personnel who have not been here in recent months according to the rules. They may have taken the opportunity to install eavesdropping devices.

9. Keep an eye out for maintenance workers and motor vehicles. If you see a maintenance truck or worker go beyond three times, it may mean that you are being watched.

10. Buy a small bug detector. Some of them can fit in your pocket and alert you by vibrating.