DDoS Attack Trends for Q3 2021

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This post provides a detailed analysis of DDoS attack trends observed in Q3 2021, categorizing them into application-layer (L7) and network-layer (L3/4) attacks. It highlights the emergence of the Meris botnet and its role in large HTTP DDoS attacks, as well as the resurgence of Mirai-variant botnets responsible for terabit-scale network-layer attacks. The post also details geographical trends in attack origins and targets, industry-specific targeting, and the evolution of attack methodologies, including a significant increase in DTLS amplification attacks and larger packet rate attacks.