massive DDoS attack

Tech giant, Microsoft states that its Azure DDoS protection platform mitigated a massive 3.47 terabits per second (Tbps) distributed denial of service (DDoS) attack targeting an Azure customer from Asia in November. Two more massive DDoS attacks followed this in December, also targeting Asian Azure customers, a 3.25 Tbps UDP attack on ports 80 and 443 and a 2.55 Tbps UDP flood on port 443.

Microsoft Survives a Massive DDoS Attack Targeting an Asian Azure Customer

“In November, Microsoft mitigated a DDoS attack with a throughput of 3.47 Tbps and a packet rate of 340 million packets per second (pps), targeting an Azure customer in Asia. We believe this to be the largest attack ever reported in history,” said Alethea Toh, an Azure Networking Product Manager.

The 15 minutes attack employed numerous attack vectors for UDP reflection on port 80, including:

  • Simple Service Discovery Protocol (SSDP),
  • Connection-less Lightweight Directory Access Protocol (CLDAP),
  • Domain Name System (DNS),
  • and Network Time Protocol (NTP)

Read more: Microsoft Takes Control of Malicious Websites Used by China-backed Hackers

Furthermore, the November 3.47 Tbps massive DDoS attack was the largest one the firm had to encounter to date (and likely ever recorded), after earlier reporting that it mitigated another record 2.4 Tbps massive DDoS attack targeting a European Azure customer during late August. Microsoft noticed a rise in attacks that lasted longer than an hour in the second half of 2021, while multi-vector attacks such as the record one mitigated in November were prevalent.

Cyberattacks Have Mostly Targeted the Gaming Industry

“Gaming continues to be the hardest hit industry. The gaming industry has always been rife with DDoS attacks because players often go to great lengths to win,” Toh added. “The concentration of attacks in Asia can be largely explained by the huge gaming footprint, especially in China, Japan, South Korea, Hong Kong, and India.”

Source: Bleeping Computer 

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