Researchers demonstrate faster remote Spectre attack against Cloudflare Workers
The researchers developed an end-to-end experiment using an attacker Worker and a victim Worker within the same production environment.
Cloudflare
20 articles
Cloudflare Workers Spectre Attack Leaks JWT From Co-Located Worker at 12 Bits/Second
Cybersecurity researchers have disclosed details of a remote Spectre attack against Cloudflare Workers that leaked a JSON Web Token (JWT) from a co-located W...
A revisit of remote Spectre attacks on Cloudflare Workers
In 2024 and 2025, we reassessed remote Spectre attacks on our Workers infrastructure. We share details about the new attack primitives like Spectre gadgets, ...
How Cloudflare detects MCP traffic and helps secure it
Cloudflare Gateway identifies MCP requests using protocol-level heuristics. Security teams can use that signal to find shadow MCP traffic, enforce Portal-onl...
Secure all your internal vibe-coded applications — in one click
Introducing Cloudflare Access for Workers. Attach an Access policy directly to a Worker and it applies everywhere that Worker runs — routes, custom domains, ...
Total eclipse of the Internet: Traffic impacts in Iceland, Spain, and Portugal
Cloudflare's data shows a clear impact on Internet traffic from Iceland to Spain and Portugal, following the path of totality of the total solar eclipse that...
Certificate Transparency Monitoring is now generally available
Cloudflare's Certificate Transparency Monitoring is now generally available. The biggest change: we no longer email you about certificates Cloudflare issued ...
Cloudflare Mitigates 23.2 Million DDoS Attacks as 1 Tbps Attacks Surge 519%
Cloudflare has mitigated 23.2 million network-layer DDoS attacks and stopped 29.
DDoS attacks hit record scale as 1 Tbps+ campaigns become more common
DDoS attacks grew in scale during the first half of 2026, bringing larger traffic floods, shorter attack durations, and increasingly automated campaigns. Clo...
DDoS attacks over 1 Tbps surged fivefold in the second quarter
Cloudflare says it mitigated more than 800 network-layer distributed denial-of-service (DDoS) attacks exceeding 1 Tbps in the second quarter of the year. [.
Cloudflare DDoS Threat Report H1 2026: 1 Tbps attacks soar as DNS floods and geopolitical tensions drive a new wave
In the first half of 2026, Cloudflare detected a 519% surge in hyper-volumetric DDos attacks across its network. These attacks were driven heavily by DNS and...
‘GhostJacking’ attack turns error logs into indirect prompt injections
Attacks targeting Cloudflare, DataDog and Sentry MCP integrations were demonstrated at DEF CON 34.
Serving the most critical missions: Cloudflare for Government achieves FedRAMP Class D (High) Certified status
Cloudflare for Government achieves FedRAMP Class D (High) Certified status. We also announce our commitment to pursue DoD IL4 authorization.
Unveiling good and bad behaviors on the Agentic Internet
Cloudflare is shifting bot mitigation from point-in-time Risk assessment to continuous Trust evaluation. Learn how new good and bad behaviors from bots and a...
Introducing Radar Researcher: An AI tool for exploring Internet data in plain language
Cloudflare Radar Researcher is a new AI-powered tool that lets you explore global Internet trends and traffic data using plain language. Built entirely on Cl...
Announcing Cloudflare Ambassadors, Community Engineers, and another $1M in open-source funding
We are launching updated community programs, including Cloudflare Ambassadors and Community Engineers, backed by $1M in open-source funding. Learn how we are...
Unifying Workers AI and AI Gateway into a single AI control plane
Cloudflare is unifying AI Gateway and Workers AI into a single control plane, giving developers observability, billing, and dynamic routing across both manag...
The 12 Best Protective DNS (PDNS) Services, Compared and Priced (2026)
Protective DNS is the rare control where the cheap options are genuinely good so this comparison leads with value.
Cloudflare AI Search: give your agents a search engine for your data
AI Search makes search easier than ever, with no Cloudflare primitives to stitch together. Point it at your data to create a search for your own files and we...
Introducing Kitesurf: The agent-first browser that runs in V8 isolates on Cloudflare Workers
We should be giving all agents tools that excel at what’s important for an AI model. Kitesurf is Cloudflare’s new stateless, highly scalable, and cost-effect...