Methods of counteraction of bypassing two-factor authentication using reverse proxy

Abstract

The existing solutions for counteracting and preventing the interception of data and tokens of two-factor authentication are considered. Features that may indicate the presence of a silent reverse proxy server are chosen. It is proposed to analyze the information about additional time anomalies, which are usually created by the proxy server. The advantage of this approach is that the time characteristics information is generated on the client-side, and the malicious proxy server cannot modify it. Machine learning methods were used to detect implicit signs of the presence of a proxy server. A new method of detecting a silent reverse proxy server that satisfies the following conditions is proposed: 1) the human factor is minimized, 2) use by an individual user is possible, 3) the method has an acceptable impact on performance and can be used in real-time.

Peculiarities of phishing threats and preventive measures in the conditions of war in Ukraine

“…An attacker, by intercepting the 2nd authentication factor, can gain access to the victim's resources, using a reverse proxy server, in this way -obtain complete information about the person posted on the resource [9]. Such attacks can be successfully carried out, for example, for Twitter, and for some mail providers.…”