News outlets and blogs will frequently compare DDoS attacks by the volume of traffic that a victim receives. Surely this makes some sense, right? The greater the volume of traffic a victim receives, the harder to mitigate an attack – right? At least, this is how things used to work. An attacker would gain capacity […]
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Living In A Multi-Cloud World
A few months ago at Cloudflare’s Internet Summit, we hosted a discussion on A Cloud Without Handcuffs with Joe Beda, one of the creators of Kubernetes, and Brandon Phillips, the co-founder of CoreOS. The conversation touched on multiple areas, but it’s clear that more and more companies are recognizing the need to have some strategy […]
Thwarting the Tactics of the Equifax Attackers
We are now 3 months on from one of the biggest, most significant data breaches in history, but has it redefined people’s awareness on security? The answer to that is absolutely yes, awareness is at an all-time high. Awareness, however, does not always result in positive action. The fallacy which is often assumed is “surely, […]
Cloudflare Wants to Buy Your Meetup Group Pizza
If you’re a web dev / devops / etc. meetup group that also works toward building a faster, safer Internet, I want to support your awesome group by buying you pizza. If your group’s focus falls within one of the subject categories below and you’re willing to give us a 30 second shout out and […]
Privacy Pass – “The Math”
This is a guest post by Alex Davidson, a PhD student in Cryptography at Royal Holloway, University of London, who is part of the team that developed Privacy Pass. Alex worked at Cloudflare for the summer on deploying Privacy Pass on the Cloudflare network. During a recent internship at Cloudflare, I had the chance to […]
Cloudflare supports Privacy Pass
Enabling anonymous access to the web with privacy-preserving cryptography Cloudflare supports Privacy Pass, a recently-announced privacy-preserving protocol developed in collaboration with researchers from Royal Holloway and the University of Waterloo. Privacy Pass leverages an idea from cryptography — zero-knowledge proofs — to let users prove their identity across multiple sites anonymously without enabling tracking. Users […]
LavaRand in Production: The Nitty-Gritty Technical Details
Introduction Lava lamps in the Cloudflare lobby Courtesy of @mahtin As some of you may know, there’s a wall of lava lamps in the lobby of our San Francisco office that we use for cryptography. In this post, we’re going to explore how that works in technical detail. This post assumes a technical background. For […]
Randomness 101: LavaRand in Production
Introduction Lava lamps in the Cloudflare lobby Courtesy of @mahtin As some of you may know, there’s a wall of lava lamps in the lobby of our San Francisco office that we use for cryptography. In this post, we’re going to explore how that works. This post assumes no technical background. For a more in-depth […]
How to Monkey-Patch the Linux Kernel
I have a weird setup. I type in Dvorak. But, when I hold ctrl or alt, my keyboard reverts to Qwerty. You see, the classic text-editing hotkeys, ctrl+Z, ctrl+X, ctrl+C, and ctrl+V are all located optimally for a Qwerty layout: next to the control key, easy to reach with your left hand while mousing with […]
Performing & Preventing SSL Stripping: A Plain-English Primer
Over the past few days we learnt about a new attack that posed a serious weakness in the encryption protocol used to secure all modern Wi-Fi networks. The KRACK Attack effectively allows interception of traffic on wireless networks secured by the WPA2 protocol. Whilst it is possible to backward patch implementations to mitigate this vulnerability, […]
