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Countersurveillance: What is it? What is it for? What are the methods?

The purpose of counter-surveillance is to protect the client in the event that the client requests it because they are in a situation of danger or risk. It also allows you to detect if he, or members of his family, are subject to a surveillance situation. The objective, ultimately, is to guarantee the security of the contracting party. Counter-surveillance is carried out, in any case, as established by the Private Security Law 5/2014.


When someone experiences the feeling of being observed, followed or investigated by third parties, it is advisable to consult a professional to dispel any uncertainty and determine if the suspicions are founded. Countersurveillance is presented as a service intended to investigate whether a person is being subject to surveillance, persecution or investigation without their prior consent.

The purpose of countersurveillance is to safeguard the privacy and rights of the individual, while providing protection in potentially dangerous situations, such as cases of harassment or when a restraining order is in place.

It is at this point where the role of private detectives comes into play, as they play a crucial role in counter-surveillance services. The role of detectives in counter-surveillance focuses on identifying and neutralizing any unauthorized surveillance activity that may threaten the security and privacy of the client, since prevention is the most important figure in counter-surveillance.


Various advanced methods and techniques are used to carry out counter-surveillance services, we highlight the following:

  1. Discreet surveillance : a stealthy observation by the private detective to detect suspicious behavior or the presence of unwanted surveillance.

  2. Security analysis : thorough evaluation of the facilities or environments where the client will go to identify possible vulnerabilities and determine the risk of unauthorized surveillance activities.

  3. OSINT : in order to collect and analyze information, in order to understand situations, evaluate threats, conduct investigations or make informed decisions.

  4. Digital Forensics: Application of knowledge in digital forensics to identify and track malicious activity, especially in cases of electronic surveillance or intrusions into computer systems.


It is common for the terms surveillance and counter-surveillance to be confused, so it is crucial to understand both definitions when selecting the services of a detective.

Surveillance refers to systematic observation using various techniques and tools, directed at different places or people. It is an investigation of an eminently visual nature.

In contrast, counter-surveillance, as mentioned above, is a technique that, through the use of various surveillance tools and methodologies, makes it possible to identify whether a person or company is being monitored by a third party.

Counter-surveillance is commonly used in situations of harassment, restraining orders and as a preventive measure against possible surveillance, in addition to being a way to preserve a person's privacy. This approach is particularly useful when you want to keep sensitive information away from the knowledge of third parties.

The main objective of any counter-surveillance service is to safeguard the client's fundamental rights and protect them from risk situations. In short, counter-surveillance ensures comprehensive protection of the client in all aspects.


Counter-surveillance services can be used by any person or company, as long as they have a legitimate interest supported by suspicions of possible surveillance or monitoring by third parties.

Whatever the area to be protected or preserved, whether business or family, the counter-surveillance technique must cover all environments close to the client who has requested this type of investigation. For example:

  • Housing environment.

  • Schedules and itineraries.

  • Workplace.

  • Social and personal activities.

At KI Intelligence our private detectives provide their clients with various tools and techniques to detect and prevent surveillance, such as listening devices, hidden cameras, GPS tracking devices, and even spyware on mobile devices and computers. These measures guarantee comprehensive protection of the client against possible unauthorized intrusions into their privacy.

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