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Complexity of monolithic kernel of existing operating systems results in security exploits inevitably. When it is compromised, manual recovery from kernel-level attacks is usually time-consuming. The whole process is expected to be automatic and supported in system level. The requirement becomes more necessary for modern embedded systems, which lack such administrative and recovery tools for end users comparing with PC. The authors implement a prototype system called OSKROD to support system automatic recovery. OSKROD can take a collection of actions to recover infected kernel, after detecting kernel-level attacks infections based on system virtualization technique.
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