Description of Phone Spam Calls Using GSM Modems!

Phone spam calls using GSM modems is a technique where special equipment and software are used to make mass phone calls to targeted numbers. The main goal of such spam is to overload phone lines or create disruptions in normal communication. This technology can be employed for various purposes, from DDoS attacks to aggressive marketing or even fraudulent schemes.

How it Works:

GSM Modems: These are devices that allow sending and receiving data over mobile networks using SIM cards. A single modem can make calls from one number, but for large-scale attacks, multiple modems are used, each connected to a separate SIM card.

Software: Specialized software is used to manage the modems, automating the process of making calls. Such programs usually have an interface where users can set parameters: how many calls to make, at what intervals, and to which numbers.

Mass Call Launch: GSM modems initiate a large number of calls to the specified number or group of numbers via mobile networks. Often, this process does not require human involvement as all the calls are launched automatically by the software.

Line Overload: When a large number of incoming calls are made to a phone number, it becomes busy or overloaded. This makes it impossible for other callers to reach that number, which can be used to disrupt business operations, block phone lines, or for other malicious purposes.

Pros:

Scalability: GSM modems allow easy scaling of attacks. Dozens or even hundreds of modems can be used simultaneously to attack one or several numbers.

Automation: The process is fully automated thanks to the software, allowing attacks to be launched without constant operator involvement.

Affordable Equipment: GSM modems and SIM cards are relatively affordable, making this method popular among malicious actors.

Cons:

Illegality: Phone spam is illegal in most countries, and those using such methods could face criminal charges.

Unreliability: Some mobile operators and security services can track suspicious activity and quickly block the SIM cards or numbers used for spam.

Technical Limitations: Telecom operators may implement protective measures, such as automatically blocking numbers making too many calls in a short time.

Thus, phone spam using GSM modems is a dangerous practice that can disrupt normal communication, but it also carries legal risks and technical challenges.