Computer viruses continue to evolve

Symantec recently announced that it has detected the first 64-Bit virus. Called W64.Rugrat.3344, it's a virus that targets PCs running the 64-bit Windows operating system. Interestingly, while the virus is written to infect 64-bit Windows, a true 64 bit machine is not required for this virus, as it can be run on a 32 bit machine using 64 bit simulation software. It also uses the Thread Local Storage structures to execute the viral code which is an unusual method of executing code.