500 Tbps of capacity: 16 years of scaling our global network
2026-04-10
Cloudflare’s global network has officially crossed 500 Tbps of external capacity, enough to route more than 20% of the web and absorb the largest DDoS attacks ever recorded....
Network Services
Introducing Programmable Flow Protection: custom DDoS mitigation logic for Magic Transit customers
2026-03-31
Magic Transit customers can now program their own DDoS mitigation logic and deploy it across Cloudflare’s global network. This enables precise, stateful mitigation for custom and proprietary UDP protocols....
How we mitigated a vulnerability in Cloudflare’s ACME validation logic
2026-01-19
A vulnerability was recently identified in Cloudflare’s automation of certificate validation. Here we explain the vulnerability and outline the steps we’ve taken to mitigate it. ...
A closer look at a BGP anomaly in Venezuela
2026-01-06
There has been speculation about the cause of a BGP anomaly observed in Venezuela on January 2. We take a look at BGP route leaks, and dive into what the data suggests caused the anomaly in question....
One IP address, many users: detecting CGNAT to reduce collateral effects
2025-10-29
IPv4 scarcity drives widespread use of Carrier-Grade Network Address Translation, a practice in ISPs and mobile networks that places many users behind each IP address, along with their collected activity and volumes of traffic. We introduce the method we’ve developed to detect large-scale IP sharing globally and mitigate the issues that result. ...
Network performance update: Birthday Week 2025
2025-09-26
On the Internet, being fast is what matters and at Cloudflare, we are committed to being the fastest network in the world....
Cloudflare’s commitment to CISA Secure-By-Design pledge: delivering new kernels, faster
2025-04-04
Cloudflare’s commitment to the CISA pledge reflects our dedication to transparency and accountability to our customers. This blog post outlines how we deliver newly patched kernels across our ...
Introducing Cloudy, Cloudflare’s AI agent for simplifying complex configurations
2025-03-20
Cloudflare’s first AI agent, Cloudy, helps make complicated configurations easy to understand for Cloudflare administrators....
Resolving a Mutual TLS session resumption vulnerability
2025-02-07
Cloudflare patched a Mutual TLS (mTLS) vulnerability (CVE-2025-23419) reported via its Bug Bounty Program. The flaw in session resumption allowed client certificates to authenticate across different...
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...
Global elections in 2024: Internet traffic and cyber threat trends
2024-12-23
In 2024, as elections took place across over 60 countries, the Internet became both a battleground for cyberattacks and a vital platform for democratic engagement....
Robotcop: enforcing your robots.txt policies and stopping bots before they reach your website
2024-12-10
The AI Crawl Control (formerly AI Audit) now allows you to quickly see which AI services are honoring your robots.txt policies and then automatically enforce the policies against those that aren’t. ...
Reaffirming our commitment to free
2024-09-27
Today Cloudflare reaffirms its commitment to offering a robust Free service tier that continues to improve. We share why Free is a cornerstone of our business strategy, and how it contributes to building a better Internet. ...
Cloudflare partners with Internet Service Providers and network equipment providers to deliver a safer browsing experience to millions of homes
2024-09-24
Cloudflare is extending the use of our public DNS resolver through partnering with ISPs and network providers to deliver a safer browsing experience directly to families. Join us in protecting every Internet user from unsafe content with the click of a button, powered by 1.1.1.1 for Families....
Introducing Ephemeral IDs: a new tool for fraud detection
2024-09-23
As the Internet evolves, Turnstile does too. Introducing Ephemeral IDs — a new dimension in detecting fraudulent activity, bot or human, that links behavior to a specific client instead of an IP address. This makes Turnstile better for everyone, everywhere. ...
Network performance update: Birthday Week 2024
2024-09-23
Since June 2021, we’ve been measuring and ranking our network performance against the top global networks in the world. We use this data to improve our performance, and to share the results of those initiatives. In this post, we’re going to share with you how network performance has changed since our last post in March 2024, and discuss the tools and processes we are using to assess network performance. ...
Removing uncertainty through "what-if" capacity planning
2024-09-20
Cloudflare’s Capacity Planning team discusses planning for “what-if” type scenarios, and how they’ve introduced a new “Scenario Planner” system to quickly model hypothetical future changes...
Simplify cloud routing and object storage configurations with Cloud Connector
2024-08-16
Meet Cloud Connector — a new free product to simplify your cloud routing and object storage configurations. Say goodbye to frustrating Host Header workarounds and hello to protecting your assets, accelerating applications, and routing your traffic between multiple cloud providers seamlessly...
Introducing Automatic SSL/TLS: securing and simplifying origin connectivity
2024-08-08
This new Automatic SSL/TLS setting will maximize and simplify the encryption modes Cloudflare uses to communicate with origin servers by using the SSL/TLS Recommender....
Avoiding downtime: modern alternatives to outdated certificate pinning practices
2024-07-29
Outages caused by certificate pinning is increasing. Learn why certificate pinning hasn’t kept up with modern standards and find alternatives to improve security while reducing management overhead...
