From: John Levine #Bitcoin   
#014817
November 03, 2008, 01:32:39 PMBitcoin P2P e-cash paper

Replying to: >>014810
Replies: >>014818
> As long as honest nodes control the most CPU power on the network,
> they can generate the longest chain and outpace any attackers.

But they don't. Bad guys routinely control zombie farms of 100,000
machines or more. People I know who run a blacklist of spam sending
zombies tell me they often see a million new zombies a day.

This is the same reason that hashcash can't work on today's Internet
-- the good guys have vastly less computational firepower than the bad
guys.

I also have my doubts about other issues, but this one is the killer.

R's,
John

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