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The process of attackers exploiting the target facilities is always gradual in cyberspace, and multiple attack steps would be performed in order to achieve the ultimate goal. How to identify the attack scenarios is one of the challenges in many research fields, such as cyberspace security situation awareness, the detection of APT (Advanced Persistent Threat) and so on. Alert correlation analysis based...
The measurement of worm propagation impact on network status remained an elusive goal. This paper analyzes the worm characteristics and network traffic and service, introduces evaluation metrics and presents a new method to assess the network situation under worm propagation. The applicability of this method is verified by simulated experiments with the network simulation tool LSNEMUlab test bed.
The worm experimental environment is the pivotal foundation for the worm research. Existing methods to build the environment can be classified into three categories: mathematical modeling, simulation and emulation. However, almost all of the existing methods inherently face a rigid fidelity-scalability tradeoff problem. Aming at this issue, this paper proposes a novel virtual-reality hybrid worm emulation...
This paper presents a study of the security vulnerability analysis based upon the formal methods and model checking tools. Through deeply exploring the characteristics of software vulnerabilities, we develop the FSM model to formalize and reason about security vulnerabilities. The vulnerability is modeled as a series of elementary FSMs (eFSMs), which specifies a derived predicate. We have proposed...
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