A PhD student at Duke University has given what I would consider a pretty worrying analysis outlining the ease with which the electronic voting in November's presidential elections could be disrupted. He's entitled it President Nader.

Avi Rubin, meanwhile, who was one of those who brought the problems with electronic voting to public attention, has proposed an interesting challenge: he wants to know if a voting machine that was rigged in favour of a particular candidate could pass certification. What a good idea. Just like undercover agents testing the security at airports.

As Avi says, if a rigged machine makes it through the certifciation process in every state that it is tested, these machines need to be quickly eliminated from the election process.