Since early September, Cloudflare’s DDoS protection systems have been combating a month-long campaign of hyper-volumetric L3/4 DDoS attacks. Cloudflare’s defenses mitigated over one hundred hyper-volumetric L3/4 DDoS attacks throughout the month, with many exceeding 2 billion packets per second (Bpps) and 3 terabits per second (Tbps). The largest attack peaked 3.8 Tbps — the largest […]
Tag Archives: security
Wrapping up another Birthday Week celebration
2024 marks Cloudflare’s 14th birthday. Birthday Week each year is packed with major announcements and the release of innovative new offerings, all focused on giving back to our customers and the broader Internet community. Birthday Week has become a proud tradition at Cloudflare and our culture, to not just stay true to our mission, but […]
Advancing cybersecurity: Cloudflare implements a new bug bounty VIP program as part of CISA Pledge commitment
As our digital world becomes increasingly more complex, the importance of cybersecurity grows ever more critical. As a result, Cloudflare is proud to promote our commitment to the Cybersecurity and Infrastructure Security Agency (CISA) ‘Secure by Design’ pledge. The commitment is built around seven security goals, aimed at enhancing the safety of our products and […]
AI Everywhere with the WAF Rule Builder Assistant, Cloudflare Radar AI Insights, and updated AI bot protection
The continued growth of AI has fundamentally changed the Internet over the past 24 months. AI is increasingly ubiquitous, and Cloudflare is leaning into the new opportunities and challenges it presents in a big way. This year for Cloudflare’s birthday, we’ve extended our AI Assistant capabilities to help you build new WAF rules, added AI […]
Cloudflare partners with Internet Service Providers and network equipment providers to deliver a safer browsing experience to millions of homes
A committed journey of privacy and security In 2018, Cloudflare announced 1.1.1.1, one of the fastest, privacy-first consumer DNS services. 1.1.1.1 was the first consumer product Cloudflare ever launched, focused on reaching a wider audience. This service was designed to be fast and private, and does not retain information that would identify who is making […]
Introducing Ephemeral IDs: a new tool for fraud detection
In the early days of the Internet, a single IP address was a reliable indicator of a single user. However, today’s Internet is more complex. Shared IP addresses are now common, with users connecting via mobile IP address pools, VPNs, or behind CGNAT (Carrier Grade Network Address Translation). This makes relying on IP addresses alone […]
Introducing the Project Argus Datacenter-ready Secure Control Module design specification
Historically, data center servers have used motherboards that included all key components on a single circuit board. The DC-SCM (Datacenter-ready Secure Control Module) decouples server management and security functions from a traditional server motherboard, enabling development of server management and security solutions independent of server architecture. It also provides opportunities for reducing server printed circuit […]
HTTP/2 Zero-Day Vulnerability Results in Record-Breaking DDoS Attacks
Earlier today, Cloudflare, along with Google and Amazon AWS, disclosed the existence of a novel zero-day vulnerability dubbed the “HTTP/2 Rapid Reset” attack. This attack exploits a weakness in the HTTP/2 protocol to generate enormous, hyper-volumetric Distributed Denial of Service (DDoS) attacks. Cloudflare has mitigated a barrage of these attacks in recent months, including an […]
HTTP/2 Rapid Reset: deconstructing the record-breaking attack
Starting on Aug 25, 2023, we started to notice some unusually big HTTP attacks hitting many of our customers. These attacks were detected and mitigated by our automated DDoS system. It was not long however, before they started to reach record breaking sizes — and eventually peaked just above 201 million requests per second. This […]
Uncovering the Hidden WebP vulnerability: a tale of a CVE with much bigger implications than it originally seemed
At Cloudflare, we're constantly vigilant when it comes to identifying vulnerabilities that could potentially affect the Internet ecosystem. Recently, on September 12, 2023, Google announced a security issue in Google Chrome, titled “Heap buffer overflow in WebP in Google Chrome,” which caught our attention. Initially, it seemed like just another bug in the popular web […]
