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Microsoft says it mitigated one of the largest DDoS attacks ever recorded

Microsoft says it was capable of mitigate a 2.4Tbps Distributed Denial-of-Service (DDoS) assault in August. The assault focused an Azure buyer in Europe and was 140 % greater than the highest assault bandwidth quantity Microsoft recorded in 2020. It additionally exceeds the peak visitors quantity of 2.3Tbps directed at Amazon Web Services final 12 months, although it was a smaller assault than the 2.54Tbps one Google mitigated in 2017.

Microsoft says the assault lasted greater than 10 minutes, with short-lived bursts of visitors that peaked at 2.4Tbps, 0.55Tbps, and at last 1.7Tbps. DDoS attacks are usually used to pressure web sites or providers offline, due to a flood of visitors that an online host can’t deal with. They’re normally carried out via a botnet, a community of machines which have been compromised utilizing malware or malicious software program to regulate them remotely. Azure was capable of keep on-line all through the assault, due to its means to soak up tens of terabits of DDoS attacks.

“The assault visitors originated from roughly 70,000 sources and from a number of nations in the Asia-Pacific area, corresponding to Malaysia, Vietnam, Taiwan, Japan, and China, in addition to from the United States,” explains Amir Dahan, a senior program supervisor for Microsoft’s Azure networking group.

Whereas the quantity of DDoS attacks have elevated in 2021 on Azure, the most assault throughput had declined to 625Mbps earlier than this 2.4Tbps assault in the final week of August. Microsoft doesn’t title the Azure buyer in Europe that was focused, however such attacks will also be used as cowl for secondary attacks that try and unfold malware and infiltrate firm programs.

The assault is one of the largest in latest reminiscence. Final 12 months, Google detailed a 2.54Tbps DDoS attack it mitigated in 2017, and Amazon Internet Companies (AWS) mitigated a 2.3Tbps assault. In 2018, NetScout Arbor fended off a 1.7Tbps assault.

Correction October twelfth, 3:17PM ET: We initially reported that Microsoft had mitigated the largest DDoS assault ever recorded, however Google mitigated a bigger one in 2017. We have now modified the headline and the article to replicate this. We remorse the error.

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