Research Days 2023: Cloud Auto-scaling Mechanism Under DDoS Attacks: Yo-Yo Attack and Tandem Attack

It is a common belief that Auto-scaling mechanisms serve as a mitigation for Distributed Denial of Service (DDoS) attacks on cloud computing infrastructures by dynamically adding machines to cope with the additional load. Intuitively, such attacks are mostly associated with Economic Denial of Sustainability (EDoS) derived from paying for the extra resources required to process the malicious incoming traffic. Contrary to this belief, we present and analyze the Yo-Yo attack, a new attack against the auto-scaling mechanism that can cause significant performance degradation in addition to economic damage. We demonstrate the attack on Amazon EC2, Kubernetes, and serverless architecture. We then present and analyze Tandem Attack, a new attack on Microservices architecture. In this attack, the attacker exploits the tandem behavior of services with different auto-scaling mechanisms, causing both economic and performance damage. Speakers: Prof. Anat Bremler-Barr, Tel Aviv University (currently transitioning from Reichman University) Michael Czeizler, Reichman University Conversation Leader: Jeremy Eder, Red Hat

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