How to steal Bitcoins that are protected by weak passphrases

Re:How to steal Bitcoins that are protected by weak passphrases by sodastream on Saturday March 08, 2014 @05:10PM (#7366576)

Brain wallets should never be used. Even experts fail at picking phrases with enough entropy.

Full stop.

You should be very carefull with your Bitcoin.

I would go with one of the zero trust multisignature wallets because I like 2factor and I don't like the idea of some malware taking the funds away at will when it finds a key in memory.

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Re:How to steal Bitcoins that are protected by weak passphrases by lukifer on Saturday March 08, 2014 @05:40PM (#7366667)

Warp Wallet has had a 20 BTC bounty on cracking an 8-bit alphanumeric password for a few months now, still unclaimed: https://keybase.io/warp

There are safe(r) ways to use a brain wallet, but it shouldn't be done without understanding the math and the risks. At the end of the day, redundant and physically secure paper wallets will always be the best option.

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Re:How to steal Bitcoins that are protected by weak passphrases by sodastream on Saturday March 08, 2014 @08:40PM (#7367102)

I guess scrypt makes it much harder in memory requirements to bruteforce dictionaries and famose phrases/documents although still risky with keyloggers.

The most promising web wallet i've seen so far is https://greenaddress.it which seems pretty much like "Electrum" online but with two factor which in theory means a local keylogger can't steal your bitcoin.

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