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With increasing network security threats, the network vulnerability must consider exploits in the context of multistage, multi-host attack scenarios. The general approach to this problem is to construct an attack graph for a given network configuration. An attack graph consists of a number of attack paths which are essentially series of exploits which an attacker employs to reach the destination....
The 3 most important issues for anomaly detection based intrusion detection systems by using data mining methods are: feature selection, data value normalization, and the choice of data mining algorithms. In this paper, we study primarily the feature selection of network traffic and its impact on the detection rates. We use KDD CUP 1999 dataset as the sample for the study. We group the features of...
Ensuring public security is an important issue for every government, and effective public security depends on the efficiency of criminal justice processes and procedures. The procedures of the criminal justice may be viewed as the upper-, middle-, and down-stream sections of a supply chain. Like their business counterparts, most law enforcement agencies have to deal with logistics, information flow,...
This study centers on multiple-scheme encryption using annotation technology. The objective was to propose a composite encryption framework that combines several encryption specifications. It was assumed that combining several encryption standards can further enhance information security. It divided a message to be encrypted into packets and each packet was coded with a methodology independent of...
We present the use of swept wavelength interferometry for distributed fiber-optic temperature measurements in a nuclear reactor. The sensors consisted of 2-m segments of commercially available, single mode optical fibers. The interrogation technique is based on measuring the spectral shift of the intrinsic Rayleigh backscatter signal along the optical fiber and converting the spectral shift to temperature.
Zero-day attacks - especially those that hide the attack exploit by using code obfuscation and encryption - remain a formidable challenge to existing network defenses. Many techniques have been developed that can address known attacks and similar new attacks that may arise in the future. Some methods, like Earlybird and Polygraph, focus on string-based content prevalence in payloads; others focus...
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