Riddle me this, Batman

WSJ.com - Reversing Course on Electronic Voting:

Despite common charges that the machines lack adequate security, no cases have emerged proving that a hacker or an insider has or could electronically manipulate the vote.

Still, computer-science experts argue that the systems lack protection. And former Secretary of State James A. Baker III and former President Jimmy Carter, who were co-chairmen of the bipartisan Commission on Federal Election Reform, warned in their 2005 final report that it could happen. 'Software can be modified maliciously before being installed into individual voting machines. There is no reason to trust insiders in the election industry any more than in other industries,' they found.

Diebold makes ATM machines as well as touch screen (and optical scan) e-voting machines. Don't you think it is kind of odd that the voting machines are so hackable while the ATM machines manufactured by the very same company are nearly impenetrable? Is this mere coincidence? I think not.