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Author Topic: mybitcoin hack  (Read 1514 times)
Mad7Scientist
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August 14, 2011, 01:36:54 PM
 #21

The wallet wasn't stolen on mybitcoin there was an attack where there were fraudulent deposits which had 1 confirmation. Then the money was withdrawn from mybitcoin using real bitcoins which weren't fraudulent before the 1 confirmation deposits were discovered to be invalid.
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Even in the event that an attacker gains more than 50% of the network's computational power, only transactions sent by the attacker could be reversed or double-spent. The network would not be destroyed.
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SomeoneWeird
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August 14, 2011, 02:33:35 PM
 #22

The wallet wasn't stolen on mybitcoin there was an attack where there were fraudulent deposits which had 1 confirmation. Then the money was withdrawn from mybitcoin using real bitcoins which weren't fraudulent before the 1 confirmation deposits were discovered to be invalid.

We think.
LoneTrader
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August 14, 2011, 03:36:16 PM
 #23

The wallet wasn't stolen on mybitcoin there was an attack where there were fraudulent deposits which had 1 confirmation. Then the money was withdrawn from mybitcoin using real bitcoins which weren't fraudulent before the 1 confirmation deposits were discovered to be invalid.

Oh, I see. (Sorry, hadn't read the statement on mybitcoin.com.)

In that case, what do people mean when they say the bitcoins have not been moved? Are the withdrawal transactions known?
Xephan
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August 14, 2011, 04:59:08 PM
 #24

In Linux...when you move a file, you're fucked.

Their fault for not having backups.

That's not true. Depending on which filesystem they are using, it can be just the same as recovering lost files from a FAT16/32 filesystem (ext2 uses similar mechanism to "delete" files), or a bit more complex requiring parsing filesystem journals and reconstructing from meta data.

In all cases, the most critical step is to stop writing to the disk as soon as the mistake is discovered. Yanking the power is better than a "proper" shutdown in this situation Cheesy

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