How to listen to calls in real time

Monitoring of telephone communications, also known as Listen to calls, is a topic that involves both technical and legal issues.

The use of telephone tapping techniques may be motivated by criminal investigations, national security or even for illicit purposes, such as espionage and invasion of privacy.

Regardless of the purpose, techniques for intercepting and recording telephone conversations have become increasingly sophisticated with the advancement of communication technologies.

Main Techniques Used for Phone Tapping

1. Telephone Line Wiretapping (Analog or Digital)

One of the traditional ways to tap a phone is by intercepting the physical phone line.

This type of monitoring is usually done directly at the telephone exchange or at a telephone line access point, where a listening device can be installed.

Operation: In the case of landlines, wiretapping can be done by physically tapping the wires or through digital telephone systems. The wiretap connects to the telephone line before the communication reaches its final destination.
Use: In criminal investigations, this type of wiretapping is more difficult to perform without the collaboration of telephone operators. However, it is still used in some older monitoring cases.

2. Digital Wiretaps (Data Traffic Interception)

With the advent of cell phones and the migration of communications to the internet, telephone tapping has become more digital and less dependent on physical connections.

O digital staple involves intercepting data traffic between the cell phone and the network, including calls, messages and even data from communication applications.

3. Spyware and Cell Phone Monitoring Software

One of the simplest and most accessible ways to tap a phone is to use a spyware or monitoring software.

These applications are installed on the victim's cell phone without their knowledge, allowing monitoring to take place discreetly.

Operation: Spyware can be physically installed on the device or sent via a malicious link. Once installed, the software allows the attacker to monitor phone calls, text messages, communication apps (such as WhatsApp, Telegram, Messenger), location, and even audio recordings.
Use: While many of these software programs are used for legitimate purposes, such as parental or corporate monitoring, they are also often used illegally for spying. There are several applications available on the web that allow you to install spyware on mobile devices without the need for jailbreaking or rooting.

4. VoIP Call Interception

With the popularization of internet calling applications, such as WhatsApp, Viber and Skype, call tapping VoIP (Voice over Internet Protocol) has become an increasingly relevant technique.

Although these calls do not involve the traditional telephone network, they can be intercepted using similar digital techniques.

Operation: VoIP calls are transmitted over the Internet, and this makes it possible to intercept them through the network or the service provider's server. This is done by installing specific tools that capture the call data traffic.
Use: Government agencies and criminals can employ this technique to monitor conversations made through these applications, accessing communication without relying on traditional telephone infrastructure.

5. Man-in-the-Middle Technique (MITM)

The attack of Man-in-the-Middle (MITM) is a sophisticated technique where the attacker places himself between the phone user and the communication server.

The attacker can intercept, record and even alter communications without the parties involved noticing.

Operation: This technique involves using software or fake Wi-Fi networks to intercept communication. When a person tries to make a call or send a message, the attacker can access this data, as if it were a legitimate part of the communication.
Use: Although MITM is a more complex technique, it has been used by both governments and hackers to spy on private and corporate communications without users knowing.

Legal Implications of Phone Tapping

Wiretapping is highly regulated and in many countries is illegal without proper judicial authorization.

In the United States, for example, the Wiretap Act prohibits the monitoring of communications without a court order, except in exceptional situations, such as national security investigations.

The legal implications of conducting a phone tap without consent include:

Privacy Violation: Recording or monitoring someone's conversations without their consent is a violation of privacy, a right guaranteed by law.
Criminal Proceedings: Illegal interception of communications can result in criminal charges, including prison sentences and heavy fines.
Consequences for Companies: In a corporate context, using spying software without employee permission can lead to employee lawsuits and damage to the company's reputation.