The only exception was the world's largest botnet, Rustock, whose control servers were taken out in March 2011. Some of the impact on spam levels could be felt even one year later, both in terms of spam volumes as well as the geographic and topic-related distribution of spamming. According to the eleven Research Team, the lacking influence of the majority of botnet takedowns shows that most botnet operators are able to restore their infrastructures very quickly and the latest generation of botnets is designed to be so robust that takedowns often fail to annihilate overall control infrastructures. The goal of the botnet timeline is to make the links between anti-botnet measures and spam volume trends more transparent and to create greater clarity regarding myths and speculation about the impact of botnet takedowns on spam trends. The timeline is now online and findings about further botnet takedowns and their consequences will be integrated on an ongoing basis.
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eleven - E-mail security "Made in Germany" eleven is a leading e-mail security provider based in Germany. Its unique eXpurgate technology offers a spam filter and e-mail categorization service that protects the user reliably against spam and phishing, detects potentially dangerous e-mail and can distinguish between individual messages and any kind of mass e-mail. eXpurgate also offers numerous virus protection options and a powerful e-mail firewall.
Over 45,000 companies of all sizes use eXpurgate to check and categorize more than a billion e-mail messages every day. Customers include Internet service providers and telecommunication carriers such as T-Online, O2, 1&1 and freenet as well as many well-known companies and public institutions, including Air Berlin, BMW, the Federal Association of German Banks, DATEV, the Free University of Berlin, Landesbank Berlin, RTL, SAP, ThyssenKrupp and Tobit Software AG. For more information, visit our website at: http://www.eleven.de.