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Twin Cloud concept promises a more cost effective and fast technology to scan data on the user PC. Existing approaches for scanning of data are either based on a signature-based technique, or based on emulation technique or combination of these techniques. The signature-based technique is very time consuming due to large size of virus signatures files. Due to this large database anti-virus soft ware slows down the PC. However, the increasing size of the signature file is not the only reason to drag computers to a crawl during the virus scan. Many antivirus products are available in the market claiming for the safest and more efficient antivirus. In this paper, the authors propose architecture for fast scanning of data to an un-trusted commodity cloud.
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