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Network security tools generally lack sufficient context for maintaining a well informed and proactive defense posture. Vulnerabilities are usually assessed in isolation, without considering how they contribute to overall attack risk. Similarly, intrusion alarms are logged as isolated events, with limited correlation capabilities. Security professionals are often overwhelmed by constant threats, complexity of security data, and network growth. The approach to network defense applies attack graphs for advanced vulnerability analysis and intrusion detection. Attack graphs map paths of vulnerability, showing how attackers can incrementally penetrate a network. One can then identify critical vulnerabilities and provide strategies for protection of critical network assets. Because of operational constraints, vulnerability paths may often remain.
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