European Bitcoin exchanges paralyzed by hackers.
Hacker attacks have forced two large Bitcoin exchanges, Slovenia-based Bitstamp and Bulgaria's BTC-e, to suspend withdrawals. The attacks seem to have focused on Bitcoin's vulnerability called "transaction malleability," which allows a hacker to change a transaction record in a way that allows double spending.
Earlier, the Bitcoin universe's biggest exchange, MtGox, stopped external transfers because of the same design flaw. Other exchanges will spring up or expand, but for now much of the Bitcoin infrastructure is paralyzed, showing that the system is still too experimental for broad acceptance and, for not, fit only for the most reckless of speculators.
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Price was north of $800 USD 10 days ago. Now fetching $583.
The paralyzed Mt.Gox exchange has it priced at $400, but who cares when they won't let you withdraw your money.
What a disaster.