Cloudflare outage on November 18, 2025
2025-11-18
Cloudflare suffered a service outage on November 18, 2025. The outage was triggered by a bug in generation logic for a Bot Management feature file causing many Cloudflare services to be affected. ...
Cloudflare’s 2025 Annual Founders’ Letter
2025-09-21
Cloudflare launched 15 years ago. We like to celebrate our birthday by launching new products that give back to the Internet. But we've also been thinking a lot about what's changed on the Internet....
Content Independence Day: no AI crawl without compensation!
2025-07-01
It’s Content Independence Day: Cloudflare, along with a majority of the world's leading publishers and AI companies, is changing the default to block AI crawlers unless they pay creators for content....
Cloudflare’s 2024 Annual Founders’ Letter
2024-09-22
Cloudflare launched on September 27, 2010. This week we celebrate our fourteenth birthday...
Automatically replacing polyfill.io links with Cloudflare’s mirror for a safer Internet
2024-06-26
CDNJSJavaScriptVulnerabilitiesApplication SecurityApplication ServicesSupply Chain AttacksAttacksBetter Internet
polyfill.io, a popular JavaScript library service, can no longer be trusted and should be removed from websites...
Celebrating 10 years of Project Galileo
2024-06-12
On its 10th anniversary, Cloudflare's Project Galileo continues to offer free security services to over 2,600 journalists and nonprofits globally, supporting human rights and democracy....
Major data center power failure (again): Cloudflare Code Orange tested
2024-04-08
Just four months after a complete power outage at a critical data center we were hit with the exact same scenario. Here’s how we did this time, and what’s next...
Thanksgiving 2023 security incident
2024-02-01
On Thanksgiving Day, November 23, 2023, Cloudflare detected a threat actor on our self-hosted Atlassian server. Our security team immediately began an investigation, cut off the threat actor’s access, and no Cloudflare customer data or systems were impacted by this event...
Post mortem on the Cloudflare Control Plane and Analytics Outage
2023-11-04
Beginning on Thursday, November 2, 2023, at 11:43 UTC Cloudflare's control plane and analytics services experienced an outage. Here are the details...
Cloudflare’s 2023 Annual Founders’ Letter
2023-09-27
Cloudflare is officially a teenager. We launched on September 27, 2010. Today we celebrate our thirteenth birthday...
Welcome to Cloudflare’s Impact Week
2022-12-11
Over the course of this Impact Week, we will tell other stories about the way that the Internet, and Cloudflare specifically, provide an optimistic opportunity to improve our world....
Adjusting pricing, introducing annual plans, and accelerating innovation
2022-11-30
After not raising prices in our history, this was something we thought carefully about before deciding to do. While we have over a decade of network expansion and innovation under our belts, what may not be intuitive is that our goal is not to increase revenue from this change....
Cloudflare’s 2022 Annual Founders’ Letter
2022-09-25
Cloudflare launched on September 27, 2010. This week we'll celebrate our 12th birthday. As has become our tradition, we'll be announcing a series of products that we think of as our gifts back to the Internet...
Blocking Kiwifarms
2022-09-03
We have blocked Kiwifarms. Visitors to any of the Kiwifarms sites that use any of Cloudflare's services will see a Cloudflare block page and a link to this post. ...
Cloudflare's abuse policies & approach
2022-08-31
Cloudflare launched nearly twelve years ago. Over that time, our set of services has become much more complicated. With that complexity we have developed policies around how we handle abuse of different features Cloudflare provides...
The mechanics of a sophisticated phishing scam and how we stopped it
2022-08-09
Yesterday, August 8, 2022, Twilio shared that they’d been compromised by a targeted phishing attack. Around the same time as Twilio was attacked, we saw an attack with very similar characteristics also targeting Cloudflare’s employees...
What Cloudflare is doing to keep the Open Internet flowing into Russia and keep attacks from getting out
2022-04-03
Following Russia’s unjustified and tragic invasion of Ukraine in late February, the world has watched closely as Russian troops attempted to advance across Ukraine, only to be resisted and repelled by the Ukrainian people...
Cloudflare, CrowdStrike, and Ping Identity launch the Critical Infrastructure Defense Project
2022-03-07
Cloudflare has launched the Critical Infrastructure Defense Project to counter potential cyber retaliation for sanctions resulting from Russia's invasion of Ukraine....
Steps we've taken around Cloudflare's services in Ukraine, Belarus, and Russia
2022-03-07
At Cloudflare, we watched in horror as Russian invaded Ukraine. As of war looked more likely, we monitored the situation, with the goal of keeping our employees, our customers, and our network safe....
Why Cloudflare Bought Zaraz
2021-12-08
Today we're excited to announce that Cloudflare has acquired Zaraz. The Zaraz value proposition aligns with Cloudflare's mission. They aim to make the web more secure, more reliable, and faster. And they built their solution on Cloudflare Workers....