We have investigated the security of Polls in an open Internet scenario, where (1) clients cannot be customized or initialized in any way, (2) remote networks have arbitrary architectures including possible proxies and NAT, and (3) it is practically impossible to distribute tokens or passwords. Another requirement is that IP locking cannot be used, because it prevents a large number of legal votes. We have developed a method that is not based on IP-locking and yet is secure against automated attacks, that could massively change the result of the poll.
A. Basso, M. Miraglia
Avoiding massive automated voting in Internet polls
Electronic Notes in Theoretical Computer Science (STM 2007), vol. 197/2, pp. 149-157, ISSN: 1571-0661, DOI: 10.1016/j.entcs.2007.12.024, Elsevier 2008.
A. Basso, F. Bergadano, P. Dal Checco, I. Coradazzi
Lightweight Security for Internet Polls
Proc. of the 1st International Workshop on Electronic Government and Commerce: Design, Modeling, Analysis and Security (ICETE 2004), Setúbal, Portugal, 2004, pp. 46-55, ISBN: 972-8865-17-1, INSTICC Press 2004.