Internet Infrastructure Review (IIR) Vol.11
May 2011

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• Executive Summary[602KB]
• Infrastructure Security "Security Incidents Related to the Great East Japan Earthquake" [1.5MB]

  In this report we will examine malware observation implementations and techniques used by malware to avoid forensic detection, in addition to discussing the state of communications in Japan following the Great East Japan Earthquake and related security incidents.

• Messaging Technology "Why Japan Became the 3rd Largest Regional Source of Spam" [860KB]

  In this report we will present an overview of spam trends for week 1 through week 13 of 2011. China was the top regional source of spam. Japan's ranking rose steeply, climbing to 3rd place overall. Here we examine the reasons for this, and discuss the current relationship between anti-spam measures and IPv6 addresses.

• Cloud Computing Technology "Web Access Consolidation and Access Pattern-Based Optimization for Web-based Service Platforms" [1.1MB]

  At the Research Laboratory we are conducting research into the use of Web-based Service Platforms in cloud infrastructure as part of research and development for next-generation cloud solutions. In this report we discuss Web server optimizations based on the consolidation of Web access and access patterns, which are the key to achieving high scalability and resource utilization for Web-based Service Platforms.

• Internet Operation "The IPv4 Address Exhaustion Issue and Guidelines for Response" [610KB]

  On April 15, 2011, the regular pool of IPv4 addresses for the Asia-Pacific region was exhausted. In order to continue using the Internet in the future as we have done up to this point, we must respond appropriately to the IPv4 address exhaustion issue. Here we examine the methods that should be used to deal with this issue.

• Internet Topics "World IPv6 Day"[590KB]