Defending the Internet: how Cloudflare blocked a monumental 7.3 Tbps DDoS attack
2025-06-19
In mid-May 2025, Cloudflare blocked the largest DDoS attack ever recorded: a staggering 7.3 terabits per second (Tbps)....
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Targeted by 20.5 million DDoS attacks, up 358% year-over-year: Cloudflare’s 2025 Q1 DDoS Threat Report
2025-04-27
DDoS attacks are surging. In 2025 Q1, Cloudflare blocked +20M attacks (a 358% YoY spike) along with 5.6 Tbps and 4.8 Bpps record-breaking attacks....
Cloudflare thwarts over 47 million cyberthreats against Jewish and Holocaust educational websites
2025-01-27
January 27 marks the International Holocaust Remembrance Day — a solemn occasion to honor the memory of the six million Jews who perished in the Holocaust, along with countless others who fell victim...
Record-breaking 5.6 Tbps DDoS attack and global DDoS trends for 2024 Q4
2025-01-21
2024 ended with a bang. Cloudflare mitigated another record-breaking DDoS attack peaking at 5.6 Tbps....
4.2 Tbps of bad packets and a whole lot more: Cloudflare's Q3 DDoS report
2024-10-23
The number of DDoS attacks spiked in the third quarter of 2024. Cloudflare mitigated nearly 6 million DDoS attacks, representing a 49% increase QoQ and 55% increase YoY....
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July 09, 2024 1:00 PM
DDoS threat report for 2024 Q2
Welcome to the 18th edition of the Cloudflare DDoS Threat Report. Released quarterly, these reports provide an in-depth analysis of the DDoS threat landscape as observed across the Cloudflare network. This edition focuses on the second quarter of 2024...
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April 16, 2024 1:00 PM
DDoS threat report for 2024 Q1
2024 started with a bang. Cloudflare’s autonomous systems mitigated over 4.5 million DDoS attacks in the first quarter of the year — a 50% increase compared to the previous year. Read the full coverage...
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January 09, 2024 2:00 PM
DDoS threat report for 2023 Q4
Welcome to the sixteenth edition of Cloudflare’s DDoS Threat Report. This edition covers DDoS trends and key findings for the fourth and final quarter of the year 2023, complete with a review of major trends throughout the year...
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October 26, 2023 1:00 PM
DDoS threat report for 2023 Q3
In the past quarter, DDoS attacks surged by 65%. Gaming and Gambling companies were the most attacked and Cloudflare mitigated thousands of hyper-volumetric DDoS attacks. The largest attacks we saw peaked at 201 million rps and 2.6 Tbps....
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July 18, 2023 1:00 PM
DDoS threat report for 2023 Q2
Q2 2023 saw an unprecedented escalation in DDoS attack sophistication. Pro-Russian hacktivists REvil, Killnet and Anonymous Sudan joined forces to attack Western sites. Mitel vulnerability exploits surged by a whopping 532%, and attacks on crypto rocketed up by 600%....
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April 11, 2023 1:00 PM
DDoS threat report for 2023 Q1
Threat actors kicked off 2023 with a bang. The start of the year was characterized by a series of hacktivist campaigns against Western targets, and record-breaking hyper volumetric attacks...
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January 10, 2023 1:00 PM
Cloudflare DDoS threat report for 2022 Q4
In Q4, Cloudflare mitigated millions of DDoS attacks. Attack durations increase, volumetric attacks surged, and ransom DDoS attacks persist. Travel & events industries were hit hardest and over 90% of traffic to Chinese Internet properties were L3/4 DDoS attacks. Read more on our...
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October 12, 2022 1:00 PM
Cloudflare DDoS threat report 2022 Q3
In Q3, DDoS attacks increased by 111% YoY, Cloudflare auto-mitigated a 2.5 Tbps attack targeting a Minecraft server as multi-terabit scale DDoS attacks become increasingly frequent. Read more in our 2022 Q3 DDoS Report...
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July 06, 2022 12:55 PM
DDoS attack trends for 2022 Q2
Welcome to our 2022 Q2 DDoS report. This report includes insights and trends about the DDoS threat landscape — as observed across the global Cloudflare network...
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April 12, 2022 1:12 PM
DDoS Attack Trends for 2022 Q1
Welcome to our first DDoS report of 2022, and the ninth in total so far. This report includes new data points and insights both in the application-layer and network-layer sections — as observed across the global Cloudflare network between January and March 2022...
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January 10, 2022 1:58 PM
DDoS Attack Trends for Q4 2021
In Q4, we observed a 95% increase in L3/4 DDoS attacks and record-breaking levels of Ransom DDoS attacks. The Manufacturing industry was the most targeted alongside a 5,800% increase in SNMP-based DDoS attacks and massive campaigns against VoIP providers around the world...
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November 04, 2021 12:58 PM
DDoS Attack Trends for Q3 2021
In Q3, 2021 we saw and mitigated record-setting HTTP DDoS attacks, terabit-strong network layer attacks, one of the largest botnets ever deployed (Meris), and more recently, ransom attacks on Voice-over-IP (VoIP) service providers....
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April 19, 2021 11:00 AM
DDoS attack trends for 2021 Q1
Today, along with this deep-dive analysis blog, we’re excited to announce the new Radar DDoS Report page, our first fully automated data notebook built on top of Jupyter, Clickhouse, and Workers....
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January 22, 2021 12:00 PM
Network-layer DDoS attack trends for Q4 2020
DDoS attack trends in the final quarter of 2020 defied norms in many ways. For the first time in 2020, Cloudflare observed an increase in the number of large DDoS attacks. Specifically, the number of attacks over 500Mbps and 50K pps saw a massive uptick. ...
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November 18, 2020 12:00 PM
Network-layer DDoS attack trends for Q3 2020
In Q3 ‘20, Cloudflare observed a surge in DDoS attacks, with double the number of DDoS attacks and more attack vectors deployed than ever — with a notable surge in protocol-specific DDoS attacks such as mDNS, Memcached, and Jenkins amplification floods....
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