Hyper-volumetric DDoS attacks skyrocket: Cloudflare’s 2025 Q2 DDoS threat report
2025-07-15
June was the busiest month for DDoS attacks in 2025 Q2, accounting for nearly 38% of all observed activity....
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)....
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....
How Cloudflare auto-mitigated world record 3.8 Tbps DDoS attack
2024-10-02
Over the past couple of weeks, Cloudflare's DDoS protection systems have automatically and successfully mitigated multiple hyper-volumetric L3/4 DDoS attacks exceeding 3 billion packets per second (Bpps). Our systems also automatically mitigated multiple attacks exceeding 3 terabits per second (Tbps), with the largest ones exceeding 3.65 Tbps. The scale of these attacks is unprecedented....
DDoS threat report for 2024 Q2
2024-07-09
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...
DDoS threat report for 2024 Q1
2024-04-16
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...
Advanced DNS Protection: mitigating sophisticated DNS DDoS attacks
2024-03-07
We're proud to introduce the Advanced DNS Protection system, a robust defense mechanism designed to protect against the most sophisticated DNS-based DDoS attacks...
Cyber attacks targeting Jewish and Holocaust educational websites surge by 872% in 2023
2024-01-26
In 2023, Cloudflare mitigated 35.7 million malicious requests that targeted Jewish and Holocaust educational websites....
DDoS threat report for 2023 Q4
2024-01-09
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...
DDoS threat report for 2023 Q3
2023-10-26
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....
DDoS threat report for 2023 Q2
2023-07-18
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%....
SLP: a new DDoS amplification vector in the wild
2023-04-25
Researchers have recently published the discovery of a new DDoS reflection/amplification attack vector leveraging the SLP protocol. Cloudflare expects the prevalence of SLP-based DDoS attacks to rise in the coming weeks...
Introducing Cloudflare’s new Network Analytics dashboard
2023-04-12
Learn how the new and improved Network Analytics dashboard provides security professionals insights into their DDoS attack and traffic landscape...
DDoS threat report for 2023 Q1
2023-04-11
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...
Cloudflare mitigates record-breaking 71 million request-per-second DDoS attack
2023-02-13
This was a weekend of record-breaking DDoS attacks. Over the weekend, Cloudflare detected and mitigated dozens of hyper-volumetric DDoS attacks. The majority of attacks peaked in the ballpark of 50-70 million requests per second (rps) with the largest exceeding 71 million rps...
Uptick in healthcare organizations experiencing targeted DDoS attacks
2023-02-02
Over the past few days, Cloudflare, as well as other sources, have observed healthcare organizations targeted by a pro-Russian hacktivist group claiming to be Killnet. ...
