Man-in-the-middle (MITM) attacks pose a serious threat to SSL/TLS-based e-commerce applications, such as Internet banking. SSL/TLS session-aware user authentication can be used to mitigate the risks and to protect users against MITM attacks in an SSL/TLS setting. In this paper, we further delve into SSL/TLS session-aware user authentication and possibilities to implement it. More specifically, we overview, discuss, and put into perspective a proof of concept implementation that demonstrates the feasibility of the token-based approach. The results are promising, and we intend to develop turnkey solutions that can be used to secure e-commerce applications in terms of protection against MITM attacks. Keywords. Electronic commerce, security, man-in-the-middle attack, SSL/TLS protocol, SSL/TLS-aware user authentication
Rolf Oppliger, Ralf Hauser, David A. Basin