Security | Threat Detection | Cyberattacks | DevSecOps | Compliance

Last year, we enabled Media over QUIC (MoQ) on every Cloudflare server and opened the network for anyone to test. It provided a global MoQ endpoint, but not the isolation and access controls needed to run an application. Today, we’re adding those isolation and access controls. The new MoQ provisioning API lets you create an isolated relay for your application and issue separate credentials for publishers and subscribers.

Cloudflare's Authenticated Origin Pulls and Custom Origin Trust Store now support post-quantum authentication. Here we’ll explain how you can configure fully post-quantum secure mutually authenticated TLS connections to your origin server, dive into the engineering details of how we built it, make a shameful confession, and finally explain how this work fits into our overall post-quantum migration roadmap.

Like most infrastructure, the Internet's fragility is easy to overlook — as long as it's working. When it fails, its complexity comes into full view. Cloudflare is in a unique position to detect and document the moments when one of the interrelated systems the Internet depends on breaks down and connectivity suffers as a result. Each quarter, we summarize the disruptions we detect and annotate on Cloudflare Radar.

Debugging privacy-preserving protocols is hard. Oblivious HTTP has several different steps across four different parties, not to mention binary HTTP encoding and details spread across many draft RFCs. We've taken what we've learned operating protocols like Oblivious HTTP at the scale of millions of requests per second, and wrapped it up in a nice, clean CLI tool — that we are open-sourcing today. We call it our privacy-client, or pvcli.

Border Gateway Protocol (BGP) is the de facto routing protocol of the Internet. It offers built-in mechanisms to allow entities, represented by Autonomous Systems (ASes), to express how they want to send and receive traffic on the Internet. One such mechanism is path attributes, which carry essential routing information and metadata for their associated route.

Cloudflare has deployed new Web Application Firewall (WAF) protections for two critical vulnerabilities affecting WordPress. The protections address an Unauthenticated Remote Code Execution (RCE) vulnerability in WordPress's REST API and a related SQL Injection vulnerability. The WordPress security team disclosed the vulnerabilities to Cloudflare before public release so that we could prepare protections for customers.

On July 3, 2026, the Albanian communications authority (AKEP), the operator of the.AL country-code top-level domain (TLD) of Albania, attempted a DNSSEC key rollover. Something went wrong, resulting in DNSSEC validation failures. Any validating DNS resolver receiving these signatures was required by the DNSSEC specification to reject them and return errors to clients. That includes 1.1.1.1, the public DNS resolver operated by Cloudflare.

Bot mitigation is an adversarial game: attackers adapt, defenders respond, and the cycle continues. At Cloudflare, we stay ahead by combining visibility across our global network with signals from the client-side environment. At the network level, we analyze over 1 trillion requests per day to understand reputation, patterns, and anomalies across more than 20% of the web.

RSA and ECC, cryptographic algorithms that we’ve all relied on for decades, are vulnerable to the attack of sufficiently advanced quantum computers. Such quantum computers do not exist yet, but they seem to be coming sooner than expected. Luckily, the solution is already available: migrate to ML-KEM encryption and ML-DSA signatures, which are designed to be resistant to quantum attack. They were standardized in 2024 by the U.S.

Today, the UK government launched the Cyber Resilience Pledge: a voluntary framework inviting organizations to commit to foundational cybersecurity governance, board-level accountability, and comprehensive cybersecurity coverage across supply chains.