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Cloudflare Coped With The Most Powerful DDoS Attack to Date

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Cloudflare Coped With The Most Powerful DDoS Attack to Date

Cloudflare announced the prevention of the most powerful DDoS attack to date, reaching 17.2 million HTTP requests per second, three times the power of other known attacks. The incident happened last month and targeted one of Cloudflare’s financial clients.

According to the company, an unknown attacker used a botnet of 28,000 infected devices to send HTTP requests to the client’s network.

Based on the IP addresses of the infected devices, Cloudflare experts estimate that 15% of the traffic came from Indonesia, with another 17% from India and Brazil.

the most powerful DDoS attack

These attacks are commonly referred to as “volumetric” attacks and differ from classic DDoS attacks in that attackers focus on sending as many unwanted HTTP requests as possible to the victim’s server in order to load its CPU and RAM, hindering users use targeted sites.

Although the attack peaked at 17.2 million requests for only a few seconds, the attacker spent hours forcing his botnet to attack the victim. As a result, Cloudflare had to process over 330 million unwanted HTTP requests. Thus, for Cloudflare, this attack was equal to 68% of legitimate HTTP traffic processed by the company on average in the second quarter of 2021 (about 25 million requests per second).

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.say in Cloudflare.

the most powerful DDoS attack

Moreover, the hacker did not stop after the first incident: in the following weeks, the same botnet carried out two other large-scale attacks, including another one with a maximum capacity of 8 million requests per second, aimed at an unnamed hoster.

the most powerful DDoS attack

Cloudflare says it is currently tracking the evolution of this botnet, which appears to be based on a modified version of the well-known IoT malware Mirai.

Let me remind you that we also talked about how During five years of operation, the No More Ransom project helped to save $900 million from ransomware.

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Vladimir Krasnogolovy
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