Cloudflare’s system detected and mitigated a 17.2 million request-per-second DDoS attack, which they said is three times larger than any previous one.
Cloudflare said it’s system managed to stop the largest reported DDoS attack in July, explaining in a blog post that the attack was 17.2 million requests-per-second, three times larger than any previous one they recorded. Cloudflare’s Omer Yoachimik explained in a blog post that the company serves over 25 million HTTP requests per second on average in 2021 Q2, illustrating the enormity of the attack. He added that the attack was launched by a botnet that was targeting a financial industry customer of Cloudflare. It managed to hit the Cloudflare edge with over 330 million attack requests within seconds, he said. « The attack traffic originated from more than 20,000 bots in 125 countries around the world. Based on the bots’ source IP addresses, almost 15% of the attack originated from Indonesia and another 17% from India and Brazil combined. Indicating that there may be many malware infected devices in those countries, » Yoachimik said. « This 17.2 million rps attack is the largest HTTP DDoS attack that Cloudflare has ever seen to date and almost three times the size of any other reported HTTP DDoS attack. This specific botnet, however, has been seen at least twice over the past few weeks. Just last week it also targeted a different Cloudflare customer, a hosting provider, with an HTTP DDoS attack that peaked just below 8 million rps.
