(BBC NEWS) — A team at the University of Toronto said installation software for the popular proxy tool Simurgh also implanted keylogging spyware.
Simurgh is designed to anonymise net use and allow access to blocked sites.
However, an added Trojan is said to send data from victims' PCs to a site registered with a Saudi Arabian ISP.
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This can include the computer operator's username and machine name, as well as every window clicked and every keystroke entered.