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At 3 AM, a single IP requested a login page. Harmless. But then, across several hosts and paths, the same source began appending ?debug=true — the sign of an attacker probing the environment to assess the technology stack and plan a breach.

Minor misconfigurations, overlooked firewall events, or request anomalies feel harmless on their own. But when these small signals ...


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Internet traffic relies on the Border Gateway Protocol (BGP) to find its way between networks. However, this traffic can sometimes be misdirected due to configuration errors or malicious actions. When traffic is routed through networks it was not intend...


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Cloudflare Radar already offers a wide array of security insights — from application and network layer attacks, to malicious email messages, to digital certificates and Internet routing.

And today we’re introducing even more. We are launching several new security-rela...


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You've seen it. Maybe you didn't register it consciously, but you've seen it. That little widget asking you to verify you're human. That full-page security check before accessing a website. If you've spent any time on the Internet, you've encountered Cloudflare's Turnstile widget or Challenge Pages — likely more times than you can count.

The Turnstile widget – ...


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Handling data in streams is fundamental to how we build applications. To make streaming work everywhere, the WHATWG Streams Standard (informally known as "Web streams") was designed to establish a common API to work across browsers and servers. It shipped in browsers, was adopted by Clo...


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