Sedo's emails are another link in the chain of social engineering. They contain info that can be replicated, forged and emulated. They are *predictable*, just like their implementation of
predictable, sequential numbering of customer id's and auctions. These "hackers" have very limited cracking skills. They base their success on their social engineering skills, they use a human's approach to a situation - not a computer's cold ON/OFF - ZERO/ONE approach. To safeguard oneself against this approach, you basically have to treat each communication as a potential fraud.