In the last US Presidential elections, problems arose in relation to the use of e-voting machines. One worry was that data could be easily manipulated to achieve a certain outcome.
Well, it seems that the Americans are not the only ones to face these issues. When Nedap/Groenendaal, the firm which makes the so-called ES3B system, challenged a group of hackers to prove the machine's weakness - guess what the hackers did? Install a chess program!