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Defending the Internet: how Cloudflare blocked a monumental 7.3 Tbps DDoS attack

2025-06-19

In mid-May 2025, Cloudflare blocked the largest DDoS attack ever recorded: a staggering 7.3 terabits per second (Tbps)....

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Defending the Internet: how Cloudflare blocked a monumental 7.3 Tbps DDoS attack

Everything you need to know about NIST’s new guidance in “SP 1800-35: Implementing a Zero Trust Architecture”

2025-06-19

Zero TrustCloudflare Zero TrustPublic SectorNISTComplianceSecurity

We read NIST’s new guidance on “Implementing a Zero-Trust Architecture” so that you don’t have to. Read this to get the key points on the newly-released NIST Special Publication 1800-35. ...

Cloudflare Log Explorer is now GA, providing native observability and forensics

2025-06-18

R2 StorageSIEMProduct NewsConnectivity CloudAnalyticsDeveloper PlatformDevelopersSecurity

We are happy to announce the General Availability of Cloudflare Log Explorer, a powerful product designed to bring observability and forensics capabilities directly into your Cloudflare dashboard....

Connect any React application to an MCP server in three lines of code

2025-06-18

AIAgentsMCPCloudflare WorkersDevelopers

We're open-sourcing use-mcp, a React library that connects to any MCP server in just 3 lines of code, as well as our AI Playground, a complete chat interface that can connect to remote MCP servers. ...

Cloudflare service outage June 12, 2025

2025-06-12

OutagePost Mortem

Multiple Cloudflare services, including Workers KV, Access, WARP and the Cloudflare dashboard, experienced an outage for up to 2 hours and 28 minutes on June 12, 2025....

Celebrating 11 years of Project Galileo’s global impact

2025-06-12

Project GalileoImpactSecurity

June 2025 marks the 11th anniversary of Project Galileo, Cloudflare’s effort to protect vulnerable public interest organizations from cyber threats....

We shipped FinalizationRegistry in Workers: why you should never use it

2025-06-11

Cloudflare WorkersWebAssemblyJavaScript

Cloudflare Workers now support FinalizationRegistry, but just because you can use it doesn’t mean you should....

Building an AI Agent that puts humans in the loop with Knock and Cloudflare’s Agents SDK

2025-06-03

AIAgentsCloudflare WorkersDurable ObjectsDeveloper PlatformDevelopers

How Knock shipped an AI Agent with human-in-the-loop capabilities with Cloudflare’s Agents SDK and Cloudflare Workers....

Cloudflare named a Strong Performer in Email Security by Forrester

2025-05-30

ForresterEmail Security

Forrester has recognized Cloudflare Email Security as a Strong Performer in the ‘current offering’ category in “The Forrester Wave™: Email, Messaging, And Collaboration Security Solutions....

Let’s DO this: detecting Workers Builds errors across 1 million Durable Objects

2025-05-29

Cloudflare WorkersDurable ObjectsDogfooding

Workers Builds, our CI/CD product for deploying Workers, monitors build issues by analyzing build failure metadata spread across over one million Durable Objects....

Cloudflare named in 2025 Gartner® Magic Quadrant™ for Security Service Edge

2025-05-23

Cloudflare OneZero TrustSSEGartner

For the third consecutive year, Gartner has named Cloudflare to the Gartner® Magic Quadrant™ for Security Service Edge (SSE) report....

Resolving a request smuggling vulnerability in Pingora

2025-05-22

PingoraCDNSecurityCVEBug Bounty

Cloudflare patched a vulnerability (CVE-2025-4366) in the Pingora OSS framework, which exposed users of the framework and Cloudflare CDN’s free tier to potential request smuggling attacks....

Bringing connections into view: real-time BGP route visibility on Cloudflare Radar

2025-05-21

RadarBGPReal-time

Real-time BGP route visualization is now available on Cloudflare Radar, providing immediate insights into global Internet routing....

Performance measurements… and the people who love them

2025-05-20

Internet PerformanceLatencyOpen SourceObservabilityTTFB

Developers have a gut-felt understanding for performance, but that intuition breaks down when systems reach Cloudflare’s scale....

Your IPs, your rules: enabling more efficient address space usage

2025-05-19

APIAddressingIPv4BYOIPSpectrumCDNMagic Transit

IPv4 is expensive, and moving network resources around is hard. Previously, when customers wanted to use multiple Cloudflare services, they had to bring a new address range....

Vulnerability transparency: strengthening security through responsible disclosure

2025-05-16

CISAPolicy & LegalReliabilitySecurityCVE

In line with CISA’s Secure By Design pledge, Cloudflare shares its vulnerability disclosure process, CVE issuance criteria, and CNA duties. ...

Forget IPs: using cryptography to verify bot and agent traffic

2025-05-15

ResearchBotsBot ManagementAI BotsCryptography

Bots now browse like humans. We're proposing bots use cryptographic signatures so that website owners can verify their identity. Explanations and demonstration code can be found within the post....

QUIC restarts, slow problems: udpgrm to the rescue

2025-05-07

UDPLinuxProgramming

udpgrm is a lightweight daemon for graceful restarts of UDP servers. It leverages SO_REUSEPORT and eBPF to route new and existing flows to the correct server instance....

Scaling with safety: Cloudflare's approach to global service health metrics and software releases

2025-05-05

R2PrometheusReliability

Learn how Cloudflare tackles the challenge of scaling global service health metrics to safely release new software across our global network....

Thirteen new MCP servers from Cloudflare you can use today

2025-05-01

Model Context ProtocolCloudflare WorkersAgentsOpen SourceMCPDevelopersDeveloper Platform

You can now connect to Cloudflare's first publicly available remote Model Context Protocol (MCP) servers from any MCP client that supports remote servers. ...