Hidden DoS attack method and system based on violent cracking

Abstract

The invention belongs to the technical field of mobile communication safety, and relates to a hidden DoS attack method and system based on violent cracking. The method comprises the following steps: obtaining user information, and obtaining the international mobile subscriber recognition code range of a target user according to the user information; a malicious base station is used for constructing fake paging, and the international mobile subscriber recognition code range of a target user is narrowed; replacing the temporary mobile subscriber recognition number of the user, constructing forged paging, and determining an international mobile subscriber recognition number of the user; the malicious base station injects a forged paging message at the paging opportunity of the target user, wherein the forged paging message comprises an international mobile subscriber recognition number of the target user; after the target user is separated from the network, the target user re-initiates the ATTACH request; according to the novel hidden DoS attack disclosed by the invention, plaintext information propagated in an air interface is used, and encrypted information is not involved, so thatan existing LTE network cannot take effective measures to fight against the attack, and an operator and a user cannot perceive the attack.

Description

technical field [0001] The invention belongs to the technical field of mobile communication security, in particular to a method and system for concealing DoS attack based on brute force cracking. Background technique [0002] In recent years, the world has vigorously developed 4G, and the number of 4G users has reached an unprecedented scale. According to Gartner, by 2020, there will be 26 billion devices using LTE. Therefore, any impact on the security of the LTE system will have a serious impact on a large number of devices that rely on the LTE system. In this context, we are also facing more and more severe security issues. [0003] The International Mobile Subscriber Identity (IMSI) is a number assigned internationally to uniquely identify a mobile subscriber. IMSI is represented by 15 binary-coded decimal numbers. Among the 15 decimal numbers, the first 3 digits represent the mobile device country code (MCC for short), and the next 2 or 3 digits represent the mobile ...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that it is difficult to obtain the user IMSI due to two-way authentication and encryption in the LTE network, the present invention proposes a method and system for concealing DoS attacks based on brute force cracking, such as figure 1 , the method includes:

Images