A key property of modern day network environments such as the Internet is the possibility of multiple processes running simultaneously, concurrently and unaware of each other. However, the same property also allows an attacker for a coordinated attack in which an adversary controls many parties, interleaving the executions of the various protocol instances and creating rogue interactions between protocols. With changing network environments and new-emerging paradigms such as cloud computing, we need to assess the threat model in order to capture a broader class of attacks.
