Postbank to replace 12M bank cards after employees steal 'master key'
>The breach resulted from the printing of the bank's encrypted master key in plain, unencrypted digital language at the Postbank's old data centre in the Pretoria city centre<p>I can't read anymore.  Is there anymore technical explanation?<p>Was it actually 'printed' ... on paper?<p>Was it even an actual encryption key or just a password or something?