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. ...
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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....
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. ...
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....
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 ...
March 20, 2025 1:10 PM
Cloudflare’s first AI agent, Cloudy, helps make complicated configurations easy to understand for Cloudflare administrators....
February 07, 2025 8:13 PM
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...
January 27, 2025 10:07 PM
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...
December 23, 2024 2:00 PM
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....
December 10, 2024 2:00 PM
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. ...
September 27, 2024 1:00 PM
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. ...
September 24, 2024 1:00 PM
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 ...
September 23, 2024 1:00 PM
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 performanc...
September 23, 2024 1:00 PM
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. ...
September 20, 2024 2:01 PM
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...
August 16, 2024 2:00 PM
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...
August 08, 2024 2:05 PM
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....
July 29, 2024 1:00 PM
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...
October 31, 2023 1:01 PM
Today we're excited to announce Traffic Anomalies notifications, which proactively alert you when your Internet property is seeing an unexpected change in traffic patterns...
October 18, 2023 1:00 PM
Network engineers often need better visibility into their network’s traffic when analyzing DDoS attacks or troubleshooting other traffic anomalies. To solve this problem, Cloudflare offers a network flow monitoring product that gives customers end-to-end traffic visibility across...
