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....
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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...
2025-01-21
2024 ended with a bang. Cloudflare mitigated another record-breaking DDoS attack peaking at 5.6 Tbps....
2024-11-20
If we plot the metrics associated with large DDoS attacks observed in the last 10 years, does it show a straight, steady increase in an exponential curve that keeps becoming steeper, or is it closer to a linear growth? Our analysis found the growth is not linear but rather is exponential, with the slope varying depending on the metric (rps, pps or bps). ...
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....
October 02, 2024 1:00 PM
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 terab...
September 27, 2024 1:00 PM
The Cloudflare Radar Data Explorer provides a simple Web-based interface to build more complex API queries, including comparisons and filters, and visualize the results. The accompanying AI Assistant translates a user’s natural language statements or questions into the appropriat...
July 09, 2024 1:00 PM
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...
July 08, 2024 3:52 PM
Check the dynamics of the 2024 French legislative elections, the surprising election results’ impact on Internet traffic changes, and the cyber attacks targeting political parties...
June 26, 2024 8:23 PM
polyfill.io, a popular JavaScript library service, can no longer be trusted and should be removed from websites...
June 06, 2024 7:23 PM
The 2024 European Parliament election began in the Netherlands on June 6. Cloudflare mitigated several multi-hour DDoS attacks on Dutch political websites on June 5 and 6...
April 16, 2024 1:00 PM
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...
March 06, 2024 2:00 PM
The Cybersecurity & Infrastructure Security Agency (CISA) recently issued an Emergency Directive due to the Ivanti Connect Secure and Policy Secure vulnerabilities. In this blog, we discuss the threat actor tactics exploiting these vulnerabilities...
January 09, 2024 2:00 PM
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...
October 26, 2023 1:00 PM
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....
October 23, 2023 1:32 PM
Since the October 7 Hamas attack, DDoS attackers have been targeting Israeli newspaper and media websites as well as software companies and financial institutions. ...
October 10, 2023 12:02 PM
This post dives into the details of the HTTP/2 protocol, the feature that attackers exploited to generate the massive Rapid Reset attacks, and the mitigation strategies we took to ensure all our customers are protected...
October 10, 2023 12:02 PM
The “HTTP/2 Rapid Reset” attack exploits a weakness in the HTTP/2 protocol to generate enormous, hyper-volumetric DDoS attacks. Cloudflare has mitigated a barrage of these attacks in recent months, including an attack three times larger than any previous attack we’ve observed...
August 31, 2023 4:33 PM
In this reading list, we want to highlight some of the new additions to Radar, as well as some of the Internet disruptions and trends we’ve observed and published posts about during this year...
August 21, 2023 1:00 PM
Here is a reading list with 2023 trends, what you need to know about attacks, and a guide on how to stay protected using Cloudflare...
