Team hacks voting machine to steal votes
http://www.tgdaily.com/content/view/43579/108/


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  Security   By Emma Woollacott
  Tuesday, August 11, 2009 05:29
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*San Diego, CA - A group of computer scientists has shown just how easy it
is to hack an electronic voting machine and steal votes.*

The team, from the University of
California<http://www.universityofcalifornia.edu/>,
the University of Michigan <http://www.umich.edu/>, and Princeton
University<http://www.princeton.edu/main/>were able to force a Sequoia
AVC Advantage electronic voting machine to turn
against itself and steal votes. The computer scientists had no access to the
source code of the machine, which they bought legally at auction.

In 2007, Shacham first described return-oriented programming, a systems
security exploit that generates malicious behavior by combining short
snippets of benign code already present in the system. The team showed that
return-oriented programming can be used to execute vote-stealing
computations by taking control of a voting machine designed to prevent code
injection.

“Voting machines must remain secure throughout their entire service
lifetime, and this study demonstrates how a relatively new programming
technique can be used to take control of a voting machine that was designed
to resist takeover, but that did not anticipate this new kind of malicious
programming,” said Hovav Shacham, a professor of computer science at UC San
Diego’s Jacobs School of Engineering.

The computer scientists showed that an attacker would need just a few
minutes of access to the machine the night before the election in order to
take it over and steal votes the following day.

“Based on our understanding of security and computer technology, it looks
like paper-based elections are the way to go. Probably the best approach
would involve fast optical scanners reading paper ballots. These kinds of
paper-based systems are amenable to statistical audits, which is something
the election security research community is shifting to,” said Shacham.

Their findings were presented last week at the 2009 Electronic Voting
Technology Workshop/Workshop on Trustworthy Elections (EVT/WOTE
2009<http://www.usenix.org/event/evtwote09/>).

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