"The four researchers into the rootkit protector created and
implemented a special virtualized system that defends against
persistent rootkits that tamper with kernel execution. The system
assembles specific function calls and messages, mirrors them in a
shadow copy of the kernel hooks in a central location and protects
them from hardware write access. To test their product, called
HookSafe, the team let loose a few real rootkits and also measured
the system load on the host system. The result showed highly
effective protection with a mere 6% system slowdown."
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