Researchers at Carnegie Mellon University's School of Computer Science and College of Engineering say they have devised a low-cost system that aims to protect user privacy and improve the security of private online communications. The system, dubbed Perspectives, targets man in the middle attacks by employing the help of friendly sites or "notaries" that aid in authenticating websites used in secure transactions.
The following link installs Perspective on Linux (32-bit/64-bit), Windows, and OS X (Intel/PPC):
[Choose "open with" Mozilla Firefox]
Note: All software on this page is provided "as-is", without warranty of any kind. In no event shall the authors or Carnegie Mellon be liable for any claim arising from use of this software.
The source code is freely available.