Security Operations Centers (SOCs) collect data related to the information systems they protect and process it to detect suspicious activities. In this paper we explain how a SOC is organized, we highlight the current limitations of SOCs and their consequences regarding the performance of the detection service. We propose a new collaboration process to enhance the cooperation between security analysts in order to quickly process security events and define a better workflow that enables them to efficiently exchange feedback. Finally, we design a prototype corresponding to this new model.

International audienceThe large quantities of alerts generated by intrusion detection systems (IDS) make very difficult to distinguish on a network real threats from noise. To help solving this problem, we propose VEGAS, an alerts visualization and classification tool that allows first line security operators to group alerts visually based on their principal component analysis (PCA) representation. VEGAS is included in a workflow in such a way that once a set of similar alerts has been collected and diagnosed, a filter is generated that redirects forthcoming similar alerts to other security analysts that are specifically in charge of this set of alerts, in effect reducing the flow of raw undiagnosed alerts