Internet Infrastructure Review (IIR) Vol.17
November 2012

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• Executive Summary[2.54MB]
• Infrastructure Security "Smartphone Security"[2.61MB]

  In this report we look at the issue of many public keys used with SSL/TLS and SSH sharing the same private key as other sites, discuss the state of security on smartphones,and examine debate surrounding the supply of information for dealing with targeted attacks.

• Messaging Technology "The Impact of Botnet Countermeasures on Spam Ratios"[2.38MB]

  In this report we will present an overview of spam trends for week 27 through week 39 of 2012.Spam ratios have settled into a relatively fl at range, with a slight increase of 1.4% since the last report,and a slight decrease of 2.1% compared to the same period the previous year.We also analyze spam targeting Japan and examine the deployment status of sender authentication technology.

• Cloud Computing Technology "SDN as a Next Generation Open Network Infrastructure"[2.39MB]

  A discussion of the technical requirements for realizing SDN technology, which enables fl exible confi guration and control of virtual networks via software, and a look at its future possibilities, as well as the features of the Stratosphere SDN Platform produced by Stratosphere Inc.