Towards Improving IDS Using CTF Events

TL;DR

This paper proposes using Capture the Flag (CTF) cybersecurity competitions as a novel, dynamic method to evaluate and improve Intrusion Detection Systems (IDS) by uncovering vulnerabilities through community-driven challenges.

Contribution

It introduces a new methodology integrating CTF challenges into IDS benchmarking, enhancing vulnerability detection and practical security skills development.

Findings

CTF challenges effectively expose IDS vulnerabilities.

Community-driven CTFs improve IDS evaluation accuracy.

The approach enhances IDS benchmarking with real-world engagement.

Abstract

In cybersecurity, Intrusion Detection Systems (IDS) serve as a vital defensive layer against adversarial threats. Accurate benchmarking is critical to evaluate and improve IDS effectiveness, yet traditional methodologies face limitations due to their reliance on previously known attack signatures and lack of creativity of automated tests. This paper introduces a novel approach to evaluating IDS through Capture the Flag (CTF) events, specifically designed to uncover weaknesses within IDS. CTFs, known for engaging a diverse community in tackling complex security challenges, offer a dynamic platform for this purpose. Our research investigates the effectiveness of using tailored CTF challenges to identify weaknesses in IDS by integrating them into live CTF competitions. This approach leverages the creativity and technical skills of the CTF community, enhancing both the benchmarking process and the participants' practical security skills. We present a methodology that supports the development of IDS-specific challenges, a scoring system that fosters learning and engagement, and the insights of running such a challenge in a real Jeopardy-style CTF event. Our findings highlight the potential of CTFs as a tool for IDS evaluation, demonstrating the ability to effectively expose vulnerabilities while also providing insights into necessary improvements for future implementations.