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Analysis on Operation of Anti-Virus Systems with Real-Time Scan and Batch Scan
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 Title & Authors
Analysis on Operation of Anti-Virus Systems with Real-Time Scan and Batch Scan
Yang, Won Seok; Kim, Tae-Sung;
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We consider an information system where viruses arrive according to a Poisson process with rate . The information system has two types of anti-virus operation policies including 'real-time scan' and 'batch scan.' In the real-time scan policy, a virus is assumed to be scanned immediately after its arrival. Consequently, the real-time scan policy assumes infinite number of anti-viruses. We assume that the time for scanning and curing a virus follows a general distribution. In the batch scan policy, a system manager operates an anti-virus every deterministic time interval and scan and cure all the viruses remaining in the system simultaneously. In this paper we suggest a probability model for the operation of anti-virus software. We derive a condition under which the operating policy is achieved. Some numerical examples with various cost structure are given to illustrate the results.
anti-virus system;real-time scan;batch scan;economic analysis;probability model;
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