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Martin Gründl, "Development of an Event Correlation Engine," Master's Thesis, Department of Computer Science, Friedrich–Alexander University of Erlangen–Nuremberg (FAU), March 2008. (Advisors: Tobias Limmer and Falko Dressler)


The prevalence of e-commerce technologies and the increasing usage of Internet protocols for critical infrastructures constantly increase the potential impact of computer security incidents on the economy and our everyday life. To detect malicious activity, to warn possible victims in time and to initiate preventive countermeasures, the German Federal Office for Information Security (BSI) funded multiple projects in order to work towards an early warning system. Important components of such a system are event correlation systems, which aggregate and prioritize events produced by sensors such as intrusion detection systems. A number of first proposals can be found in the literature. Most of them are rather complex and only suited for monitoring well-known networks. Therefore, the PRISM++ correlation engine, a new system for event correlation, which supports both real-time analysis and batch processing of received events, has been developed. It offers a flexible and extensible, yet lightweight architecture. The framework also facilitates the implementation of correlation algorithms and event processing in general. Access to the generated alerts as well as to the previously received events is provided by a web interface, which enables the user to further analyze the current situation or previous incidents. I performed initial tests using some first modules, ranging from simple correlation algorithms to the integration of external metadata, indicate sufficient performance for real-time processing on event streams. Consequently, the flexible environment of the PRISM++ correlation engine provides an excellent solution for both researchers and commercial projects, as it enables its audience to easily modify its module configuration or develop additional components.

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Martin Gründl

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    author = {Gr{\"{u}}ndl, Martin},
    title = {{Development of an Event Correlation Engine}},
    advisor = {Limmer, Tobias and Dressler, Falko},
    institution = {Department of Computer Science},
    location = {Erlangen, Germany},
    month = {3},
    school = {Friedrich--Alexander University of Erlangen--Nuremberg (FAU)},
    type = {Master's Thesis},
    year = {2008},

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