Practical Application Layer Emulation in Industrial Control System Honeypots
Attacks on industrial control systems and critical infrastructure assets are on the rise. These systems are at risk due to outdated technology and ad hoc security measures. As a result, honeypots are often deployed to collect information about malicious intrusions and exploitation techniques. While virtual honeypots mitigate the excessive cost of hardware replicated honeypots, they often suffer from a lack of authenticity. In addition, honeypots utilizing a proxy to a live programmable logic controller suffer from performance bottlenecks and limited scalability. This chapter describes an enhanced, application layer emulator that addresses both limitations. The emulator combines protocol agnostic replay with dynamic updating via a proxy to produce a device that is easily integrated into existing honeypot frameworks.
Critical Infrastructure Protection