All news with #cloudflare tag

🛡️ Cloudflare introduces Bot Preference Sync to align zone-level AI bot settings with a site's robots.txt, available to all customers from Free to Enterprise. The feature prepends generated directives to any existing robots.txt so owners' Search, Agent, and Training preferences match edge-enforced rules and managed blocks. Bot Preference Sync is on by default for new customers and can be disabled by those who need custom, fine-grained policies.

🔒 Cloudflare announced task-based OAuth consent to let client owners mark specific scopes as optional, enabling users to grant a narrower subset of requested access during authorization. The change builds on OAuth's existing ability to grant fewer scopes than requested and keeps existing client behavior by default. Developers must check granted scopes after the token exchange and can opt in when configuring a client.

🔍 Researchers disclosed two denial-of-service techniques, collectively dubbed CDN Tsunami, that exploit how major CDNs translate client-facing HTTP/3 into backend HTTP/1.1 requests, amplifying small attacker traffic to large origin load. The study tested Alibaba, Baidu, Cloudflare, CloudFront, Fastly, and Tencent, finding widespread susceptibility to a bandwidth amplification variant and partial susceptibility to a connection-amplification variant. Vendor mitigations are applied at CDN edges, and the work will be presented at a September 2026 symposium.

🔐 Researchers disclosed a remote Spectre attack against Cloudflare Workers that leaked a JSON Web Token (JWT) from a co-located Worker at up to 12 bits per second, far exceeding the 2021 rate. The experiment used attacker and victim Workers controlled by researchers, with Cloudflare confirming mitigations deployed in production and reporting no signs of active exploitation. Cloudflare improved Dynamic Process Isolation (DyPrIs), integrated the V8 Sandbox, and added MPK-based in-process isolation to address the weakness.

🔍 In 2024–2025 research, Cloudflare reassessed remote Spectre attacks against Cloudflare Workers and tested defenses introduced in 2021, notably Dynamic Process Isolation (DyPrIs). The team rebuilt a production proof-of-concept showing a reliable remote Spectre leak under production workloads, found a DyPrIs limitation, and implemented further mitigations including the V8 Sandbox and in-process isolation. The report emphasizes the attack was mitigated in production and no active exploitation was observed in the past three years.

🛡️ RFC 9234 introduces a BGP Role capability and an Only to Customer (OTC) path attribute to encode neighbor relationships and prevent route leaks directly in the protocol. Cloudflare measured adoption by monitoring which peers send OTC to its network and discovered that two large Tier‑1 networks strip OTC. The post explains how Roles and OTC function, why OTC stripping undermines deployment, and offers guidance for operators to enable Roles for route leak protection.

🔒 Cloudflare announces new Cloudflare One capabilities to detect and control Model Context Protocol (MCP) traffic. These features let administrators identify which users and servers are generating MCP requests, distinguish Portal-mediated connections from direct ones, and block unauthorized direct connections on managed network paths. The update combines Gateway protocol signals with MCP Server Portals to help teams find shadow MCP servers and enforce Portal-only access to trusted MCP endpoints.

🔐 Cloudflare now lets you apply Access directly to a Worker or to all Workers in an account so applications are protected by your company login by default. When enabled, Access enforces authentication before any request reaches Worker code, regardless of domain, route, or preview URL. Policies can be set per hostname, per Worker, or account-wide, with the most specific policy taking priority. Developers can also access authenticated user details through ctx.access.getIdentity() for personalization and logging.

🌑 Cloudflare Radar analyzed HTTP request volumes during the August 12 total solar eclipse that crossed Iceland, northern Spain and Portugal, comparing five-minute slices to a same-weekday baseline. The data show pronounced traffic declines aligned with maximum obscuration, with regions along the path of totality dropping roughly 15–30% and rebounds occurring within minutes. Variations reflect local factors like time of day, cloud cover, and population distribution, while calculations used precise geometric obscuration of the sun and moon.

🛡️ Certificate Transparency Monitoring, launched in public beta in 2019, now filters out certificates Cloudflare issues on customers' behalf before sending alerts. This change addresses noisy notifications caused by routine Universal SSL renewals and other Cloudflare-managed certificates. The service is generally available and will only notify customers about certificates issued outside Cloudflare's automated systems. Settings remain available in the Cloudflare dashboard.

🔐 Signal introduced Automatic Key Verification, a new feature within a key transparency system that uses Cloudflare and Trail of Bits as independent auditors to confirm the integrity of encrypted chats. The feature enables users to verify contacts’ public keys automatically via Settings > Privacy > Advanced or by selecting "Verify Automatically" on the safety number screen, showing a green checkmark when successful. Users may disable it and continue with manual safety number checks if they prefer. Signal says this complements existing safety numbers and helps prevent undetected key swaps and man-in-the-middle attacks.

🛡️ Cloudflare reported it mitigated over 800 network-layer DDoS attacks exceeding 1 Tbps in Q2, a more than fivefold increase from Q1's 130 such events. The company, which protects roughly 20% of the web, also defended against a record 31.4 Tbps attack by the Aisuru/Kimwolf botnet. In H1 it mitigated 23.2 million network-layer attacks and handled 29.64 trillion malicious HTTP requests, while noting most attacks remained small and short-lived.

📊 Cloudflare's H1 2026 DDoS Threat Report from Cloudforce One summarizes DDoS activity across January–June 2026. The report details mitigation of 23.2 million network-layer attacks and 29.64 trillion HTTP requests, highlights April as a peak month, and describes growth in hyper-volumetric and reflection-based vectors like CLDAP. It emphasizes the necessity of automated, always-on protection.

🤖 Over Agents Week, Cloudflare outlined how agents are shaping a new class of software and detailed the platform work required to support AI-native applications. The company presented daily briefings covering runtime and infrastructure, the Agent Development Lifecycle (ADLC), Zero Trust for agents, the concept of an Agentic Internet, and measurement tools for agent behavior on the web. Cloudflare emphasized secure execution layers, developer primitives, and community collaboration as core to this evolution.

🔒 Cloudflare for Government has achieved FedRAMP Class D (High) certification, marking a major milestone in meeting rigorous U.S. federal security standards. Built on Cloudflare’s single global network and its Data Localization Suite, the FedRAMP High offering ensures processing and storage of inspected traffic within U.S. data centers. This foundation also supports Cloudflare’s pursuit of DoD IL4 authorization to serve defense-sector needs.

🔍 Cloudflare outlines how the line between human and automated traffic is blurring and why site owners must evaluate continuous behaviors rather than one-time checks. The post explains the team’s Risk vs. Trust framework, introduces tools like Precursor for continuous client-side behavioral analysis and the BotBase directory for tracking bot reputations, and previews Adaptive Intelligence and advanced mitigations for managing agentic traffic responsibly.

🛠️ Cloudflare announced a refreshed community program with two main tracks: Cloudflare Ambassadors and Community Engineers. Ambassadors will receive resources, visibility, and support to run events, teach, and grow local communities, with applications open through September 6. Community Engineers will receive grant funding to support open-source maintainers, backed by a $1M commitment and an additional $1M for Vite-related work. The update also creates a Discord committee to improve community collaboration and reduce moderation burden with new automation.

🛰️ Cloudflare launches Radar Researcher in beta, an AI-powered assistant that lets users query Radar’s open Internet datasets in plain language and receive interactive charts. The tool combines screenshots, raw API data, and view parameters to generate precise explanations and visualizations. Built on Cloudflare Workers, Agents SDK, and Workers AI, Researcher runs models with fallbacks, exposes tool traces, and uses Code Mode to query the Radar API dynamically.

🛠️ Cloudflare is consolidating AI Gateway and Workers AI into a single unified control plane and entrypoint. The unified path provides a shared binding and a single /ai/ REST API endpoint, enabling automatic creation of a default gateway for immediate observability, logging, token tracking, and cost attribution. Users can route to any provider or Workers AI with unified billing and optional elevated rate limits when using AI Gateway credits.

🛡️ Check Point Research presented four technical talks at Black Hat USA 2026 exposing trusted layers attackers abuse. Researchers dissected a decade-old Windows kernel driver in Defender, found post-injection exploitation paths across major AI agent frameworks, developed a pipeline to decompile compiled V8 bytecode malware, and identified sandbox escape vulnerabilities in Cloudflare’s Code Mode. Each talk highlighted how trusted or overlooked components can be repurposed offensively.