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Microsoft has crushed the worst DDoS attack its Azure servers have ever encountered

Hacker targeting Microsoft Azure customer
(Image credit: LightRocket)

An unnamed Microsoft Azure customer has recently been targeted by a profound 2.4 Tbps DDoS attack. Thankfully the cloud service was able to fend off the onslaught and, despite its intensity, the customer's site remains unaffected.

Azure caters for huge household names such as Ubisoft, eBay, Samsung, and Boeing... even the City of Taipei council relies on the cloud data service. As such, we're pretty glad to hear the attacks were unsuccessful.

The charge came in the form of a User Datagram Protocol (UDP) flood, in which attackers target random host ports with IP packets in order to overwhelm their network and force sites offline.

Attacks of this size demonstrate the ability of bad actors to wreak havoc by flooding targets with gigantic traffic volumes

Azure spokesperson

The intrusion—which originated from around 70,000 sources across the USA, Vietnam, and Taiwan, among other countries—lasted just 10 minutes. But each short volley took mere seconds to reach heights of 2.4 Tbps, 0.55 Tbps, and 1.7 Tbps (via The Verge). 

That puts it down as the most intense barrage Azure has ever had to deal with, at 140% higher than the company's 2020's DDoS attack.

An announcement from Microsoft Azure notes: "Attacks of this size demonstrate the ability of bad actors to wreak havoc by flooding targets with gigantic traffic volumes trying to choke network capacity.

"However, Azure’s DDoS protection platform, built on distributed DDoS detection and mitigation pipelines, can absorb tens of terabits of DDoS attacks."

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It makes a nice change to report on an attack that was sidestepped, rather than one which causes a mega-calamity. But as always this is a frightful reminder that cybercrime is not going away, or letting up any time soon. 

It'll keep evolving, as we know: "All things change in a dynamic environment. Your effort to remain what you are is what limits you." Ghost in the Shell quotes aside, do make sure you're keeping up with your cybersecurity best practises. Stay safe out there.

Katie Wickens

Screw sports, Katie would rather watch Intel, AMD and Nvidia go at it. She can often be found admiring AI advancements, sighing over semiconductors, or gawping at the latest GPU upgrades. She's been obsessed with computers and graphics since she was small, and took Game Art and Design up to Masters level at uni. Her thirst for absurd Raspberry Pi projects will never be sated, and she will stop at nothing to spread internet safety awareness—down with the hackers.