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With the increase in the sophistication of cyberattacks, collaborative defensive approaches such as Collaborative IDSs (CIDSs) have emerged. CIDSs utilize a multitude of heterogeneous monitors to create a holistic picture of the monitored network. Nowadays, a number of research institutes and companies deploy CIDSs that publish their alert data publicly, over the Internet. Such systems are important...
Cyber-attacks are steadily increasing in both their size and sophistication. To cope with this, Intrusion Detection Systems (IDSs) are considered mandatory for the protection of critical infrastructure. Furthermore, research is currently focusing on collaborative architectures for IDSs, creating a Collaborative IDS (CIDS). In such a system a number of IDS monitors work together towards creating a...
P2P botnets represent another escalation level in the race of arms between criminals and the research community. By utilizing a distributed P2P architecture they are resilient against random failures and attacks and overcome the limitations of a central command and control server. For this reason, it is important to monitor them to gather information for potential takedown attempts. In this paper,...
The ever-growing number of cyber attacks from botnets has made them one of the biggest threats on the Internet. Thus, it is crucial to study and analyze botnets, to take them down. For this, an extensive monitoring is a pre-requisite for preparing a botnet takedown, e.g., via a sinkholing attack. However, every new monitoring mechanism developed for botnets is usually tackled by the botmasters by...
Over the last years the number of cyber-attacks has been constantly increasing. Since isolated Intrusion Detection Systems (IDSs) cannot cope with the number and sophistication of attacks, collaboration among the defenders is required. Collaborative IDSs (CIDSs) work by exchanging alert traffic to construct a holistic view of the monitored network. However, an adversary can utilize probe-response...
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