Abstract
Denial of Service attacks, which have become commonplace on the Information and Communications Technologies domain, constitute a class of threats whose main objective is to degrade or disable a service or functionality on a target. The increasing reliance of Cyber-Physical Systems upon these technologies, together with their progressive interconnection with other infrastructure and/or organizational domains, has contributed to increase their exposure to these attacks, with potentially catastrophic consequences. Despite the potential impact of such attacks, the lack of generality regarding the related works in the attack prevention and detection fields has prevented its application in real-world scenarios. This paper aims at reducing that effect by analyzing the behavior of classification algorithms with different dataset characteristics.

Abstract
Adversarial machine learning is an area of study that examines both the generation and detection of adversarial examples, which are inputs specially crafted to deceive classifiers, and has been extensively researched specifically in the area of image recognition, where humanly imperceptible modifications are performed on images that cause a classifier to perform incorrect predictions. The main objective of this paper is to study the behavior of multiple state of the art machine learning algorithms in an adversarial context. To perform this study, six different classification algorithms were used on two datasets, NSL-KDD and CICIDS2017, and four adversarial attack techniques were implemented with multiple perturbation magnitudes. Furthermore, the effectiveness of training the models with adversaries to improve recognition is also tested. The results show that adversarial attacks successfully deteriorate the performance of all the classifiers between 13% and 40%, with the Denoising Autoencoder being the technique with highest resilience to attacks.

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