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HTTP/2 Rapid Reset Zero-Day Largest DDoS Attack in Internet History

October 12, 2023

In recent months, the cybersecurity world has been shaken by the revelation of a sophisticated and unprecedented cyber threat: the HTTP/2 Rapid Reset Zero-Day vulnerability.

This exploit, tracked as CVE-2023-44487, enabled cybercriminals to orchestrate what has been dubbed the largest Distributed Denial of Service (DDoS) attack ever recorded, targeting multiple internet infrastructure companies.

HTTP/2, the successor to the widely-used HTTP/1.1 protocol, brought notable advancements in efficiency by allowing multiple concurrent streams within a single connection. This concurrent processing, designed to enhance user experience and optimize data transfers, inadvertently introduced a vulnerability that threat actors ingeniously exploited.

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