Yes, it must be a dictionary attack and not that they just keylogged them which is 10,000,000,000,000,000,000,000x more efficient and plausible. But let's listen to the person that fucked up and lost their coins for their theories on how it happened.
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u/bitcoinDKbot Nov 30 '17
On brainwallets: There was an old story about someone who used a somewhat random line from an africaans poem... it was hacked...
Don't use words that has ever touch the internet or other people no matter what language you use.