Detection Section (TSCM)
Detection of Hidden Microphones and Cameras in France

An invisible but very real threat
Spy microphones, hidden cameras, transmitters concealed in everyday objects: surveillance devices have become so small and commonplace that they are now within reach of almost anyone. A confidential conversation, a negotiation, a strategic meeting, or the privacy of a home can thus be monitored without your knowledge, without the slightest outward sign.
Suspicion, on the other hand, is rarely unfounded: a leak of confidential information, a competitor who is always well-informed, strange behavior, or simply a high-stakes environment are all sufficient grounds for an investigation. Detection involves precisely dispelling that doubt by methodically searching for the presence of a listening device or image-capturing device.
When faced with an invisible threat, intuition is not enough, and self-inspection is doomed to fail: a professional device is designed to remain undetectable to the naked eye. Only a technical investigation, conducted with the appropriate equipment and a rigorous methodology, can provide a reliable answer.
What Our Services Include
Our mission is to detect and locate any listening devices.
- A thorough physical inspection of the premises and furniture;
- Frequency analysis to locate active transmitters;
- Search for microphones, cameras, and devices in standby mode;
- Inspection of suspicious objects, outlets, and access points;
- Documented record and precise location of all devices.
Each area is systematically inspected, and the results are recorded. When the threat also affects your travel plans, our response extends to our GPS beacon detection.

How Does Detection Work?
It all begins with a confidential discussion to understand your situation, the context of your concerns, and the layout of the premises, followed by a clear estimate. Our technicians then visit the site discreetly, combining a physical inspection with a technical analysis. Our detection operations are conducted under the supervision of Igor Defosse, the Aquila Group’s TSCM technical lead. You will receive a detailed report and, if applicable, the locations of any devices discovered.
Both a physical and technical inspection
Effective detection relies on a combination of two inseparable approaches. Physical inspection makes it possible to locate a device hidden inside an object, a wall, or a piece of furniture; frequency analysis reveals transmitters that are sending a signal. One without the other would leave blind spots that a well-placed device could exploit.
This dual-method approach covers both devices that transmit continuously and those that remain in standby mode or record locally—which are more difficult to detect. It is this comprehensiveness that distinguishes professional detection from a simple scan using a consumer-grade detector, which is often ineffective.
We tailor the intensity of the inspection to the sensitivity of the location and the threat level, so that the search is proportionate while remaining thorough in the areas that matter.
When to Suspect Eavesdropping
Certain signs should raise a red flag: confidential information known to third parties, a strangely well-informed competitor, items that have been moved, unusual access to your premises, or the discovery of a device you don’t recognize. Taken individually, these clues prove nothing; taken together, they warrant an investigation.
Beyond the warning signs, certain situations call for proactive monitoring: a change in leadership, a sensitive legal dispute, high-stakes negotiations, or a contentious separation. In such cases, it is better to clear up any doubts than to risk having communications intercepted.
In any case, we listen to your situation without making a big deal out of it, and we’ll tell you frankly if we think intervention is warranted.
From Assessment to Security
The discovery of a device is not an end in itself: it prompts reflection on how it might have been installed, and thus on how to protect your spaces in the long term. Beyond simply identifying the issue, we provide you with concrete recommendations to reduce your exposure and prevent a similar situation from recurring.
If you wish, the findings can be documented in a documented reportthat can be used to support a course of action or a complaint, in accordance with the legal framework.
Why Choose the Aquila Group
The Aquila Group is a firm accredited by the CNAPS, whose technical detection division is supported by a dedicated specialist and professional equipment. Our operations are carried out by our own technicians—never by an anonymous third party—throughout France, with particularly high demand in the Paris region, thanks to our network of twenty branches across five regions.
Absolute discretion, technical rigor, and an understanding of the issues at stake are the cornerstones of our investigative work. To discuss your situation with us, please contact our teams : the initial consultation is confidential and non-binding.
Individuals and businesses are also affected
Covert surveillance isn’t limited to businesses. An individual may be monitored at home in the context of a conflict, a difficult separation, or a hostile neighborhood; a professional may be monitored in their office or during sensitive meetings. In both cases, the violation of privacy or confidentiality is real and requires the same level of diligence in detection.
We tailor our approach to each situation: discretion and sensitivity in a home setting, and coordination and speed in a professional environment. Our technical approach, however, remains just as rigorous regardless of the location.
A proportionate response
Not every situation calls for the same level of resources. We tailor our response based on the sensitivity of the location and the seriousness of the concern, so we can provide an effective solution without overdoing it. This approach of proportionality is part of our consulting service: we tell you frankly what’s necessary.
This honesty also applies to the outcome: a detection can either confirm a threat or rule it out, and dispelling an unfounded suspicion is, in itself, a service that contributes to your peace of mind.
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Detecting Microphones and Cameras, Frequently Asked Questions
Yes. A thorough physical inspection, combined with a frequency analysis using professional equipment, can detect eavesdropping devices, including those in standby mode.
Rarely. These devices cannot detect devices that are in standby mode or recording locally. Reliable detection requires professional methods and equipment.
Yes, absolutely. We operate with the utmost discretion so as not to alert anyone who might be behind the surveillance.
We locate it, document it, and advise you on the next steps: securing the site and, if you wish, preparing a detailed report.
Yes, throughout France thanks to our network of branches, and at all of your locations if necessary.
Check out all our sections on investigations for detecting hidden microphones and cameras
Be sure to check out ourinsurance investigations as well as ourOSINT digital investigations.
Need a private investigator in France? Our investigations are designed to meet the needs of both individuals and businesses.




