How we mitigated a vulnerability in Cloudflare’s ACME validation logic
A vulnerability was recently identified in Cloudflare’s automation of certificate validation. Here we explain the vulnerability and outline the steps we’ve take...
19 posts from this source
A vulnerability was recently identified in Cloudflare’s automation of certificate validation. Here we explain the vulnerability and outline the steps we’ve take...
The Astro Technology Company team — the creators of the Astro web framework — is joining Cloudflare. We’re doubling down on making Astro the best framework for...
Cloudflare acquires Human Native, an AI data marketplace specialising in transforming content into searchable and useful data, to accelerate work building new e...
A recent change to 1.1.1.1 accidentally altered the order of CNAME records in DNS responses, breaking resolution for some clients. This post explores the techni...
Cloudflare Radar data shows Internet traffic from Iran has effectively dropped to zero since January 8, signaling a complete shutdown in the country and disconn...
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 s...
Physical data center maintenance is risky on a global network. We built a maintenance scheduler on Workers to safely plan disruptive operations, while solving s...
We have declared “Code Orange: Fail Small” to focus everyone at Cloudflare on a set of high-priority workstreams with one simple goal: ensure that the cause of...
We have declared “Code Orange: Fail Small” to focus everyone at Cloudflare on a set of high-priority workstreams with one simple goal: ensure that the cause of...
Cloudflare's H1 2025 Transparency Report is here. We discuss our principles on content blocking and our innovative approach to combating unauthorized streaming...
Cloudflare’s R2 SQL, a distributed query engine, now supports aggregations. Explore how we built distributed GROUP BY execution, using scatter-gather and shuffl...
AI competition intensified in 2025 as ChatGPT gained strong challengers. Instagram climbed, X declined, and platforms like Shopee, Temu, and Kwai reshaped globa...