The relatively new topic of multiprotocol attacks is the focus of this well-researched paper. Until now, most studies of this kind have analyzed the effects of attacks through a single protocol. However, it has been found that protocols that are stable in isolation can have a lot of vulnerability when attacked in the context of several coexisting protocols.

It is well known that if all of the coexisting protocols that use the same network and key infrastructure satisfy certain requirements, such as sufficiently different message structures, compositionality of the individual security properties is guaranteed. However, most of the time, in practice, these properties are not followed by the coexisting protocols. Therefore, studying multiprotocol attacks becomes relevant. It has also been found that protocols that are stable in isolation can have a lot of vulnerabilities when attacked in a group. This paper discusses ways to strengthen them against these attacks.

This study analyzes 30 protocols. It documents 163 unreported attacks possible though multiple protocols that arise through the coexistence of 23 protocols that are individually considered stable. Many of the protocols are stable individually, as well as in a two-protocol attack scenario. They break down, however, when used in a three-protocol attack.

Overall, the author does a thorough job of analyzing multiprotocol attacks. The paper also analyzes attacks and attack prevention patterns, making it a valuable resource for further research on this topic.