Quote from: xchrix on March 19, 2016, 12:10:31 PM

hackers user rainbow tables. they calculate passphrase for millions of accounts. maybe they already knew the password to your account even before you have created it. then they check all the known accounts for balances. if there is enough on it they take it.

it also happened to me in the beginning Cheesy

but to be honest it was a really weak password with just 9 characters/numbers

It's not a password, its a private key.

A password can be changed frqeuently to avoid hacks, a priv key cant.

Its recommended to use at least 30 character private keys if not 40+.