Quote from: electerium on August 08, 2015, 06:09:05 AM

Quote from: LiteCoinGuy on August 08, 2015, 06:04:22 AM

If you're using a brainwallet, move your coins - NOW!

On August 7th I will be giving a talk at DEF CON about cracking brainwallets. As part of that talk, I will be releasing a fast[1] brainwallet cracker. I'm writing this post to provide a little insight as to why I'm giving away a tool that could be used to steal. I also hope that people who are currently using brainwallets will take notice and move to a more secure storage method.

https://rya.nc/defcon-brainwallets.html

http://de.reddit.com/r/Bitcoin/comments/3g7bpa/brainwallet_shut_down_permanently_due_to/

SHA256 your passphrase IMMEDIATELY and move your coins to trezor, electrum, etc.

But electrum has a mnemonic passphrase that serves as a seed. And brainwallets are mostly a similar list of words.

So what i wonder, is this fast brainwallet hacker able to put together enough random words fast enough to hack electrum mnemonic passphrases too?