[mic159]

If I understand correctly, there is a key in the DHT that is effectively a list of pointers to all your mail? If so, an attacker could control your inbox by starting a bunch of nodes around that key, couldn't they?

To disable a persons mail, you would start up some altered nodes around the address space you want to attack, have them respond normally until you control enough or all of the nodes covering the target address. Then flip a switch that makes them all start saying that inbox is empty. Then start backing off your nodes, and replacement regular nodes would replicate your altered state.

Would this be possible? Or am I missing something?