On Building Firewall with White-Hat Bots to Prevent the Infection Spread of Malicious Botnets

This paper formulates the problem of building a firewall to prevent the spreading of a malicious botnet using a given number of white-hat bots and proposes a solution. The baseline Surrounding tactic builds a firewall by placing white-hat bots next to each other to enclose the malicious botnet. In contrast, the proposed method builds a firewall by placing white-hat bots at bottlenecks in the network. The experimental results show that this method builds an effective firewall using fewer white- hat bots than the Surrounding tactic, and the effect depends on the network density.