Encrypt it or lose it: how encrypted SNI works
September 24, 2018 12:01 PM
Today we announced support for encrypted SNI, an extension to the TLS 1.3 protocol that improves privacy of Internet users....
Roughtime: Securing Time with Digital Signatures
September 21, 2018 12:00 PM
When you visit a secure website, it offers you a TLS certificate that asserts its identity. Every certificate has an expiration date, and when it’s passed due, it is no longer valid....
Introducing the Cloudflare Onion Service
September 20, 2018 12:00 PM
Two years ago this week Cloudflare introduced Opportunistic Encryption, a feature that provided additional security and performance benefits to websites that had not yet moved to HTTPS....
RPKI and BGP: our path to securing Internet Routing
September 19, 2018 12:01 PM
This article will talk about our approach to network security using technologies like RPKI to sign Internet routes and protect our users and customers from route hijacks and misconfigurations....
RPKI - The required cryptographic upgrade to BGP routing
September 19, 2018 12:00 PM
We have talked about the BGP Internet routing protocol before. We have talked about how we build a more resilient network and how we can see outages at a country-level via BGP. We have even talked about the network community that is vital to the operation of the global Internet....
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September 17, 2018 1:02 PM
End-to-End Integrity with IPFS
This post describes how to use Cloudflare’s IPFS gateway to set up a website which is end-to-end secure, while maintaining the performance and reliability benefits of being served from Cloudflare’s edge network....
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September 17, 2018 1:01 PM
Cloudflare goes InterPlanetary - Introducing Cloudflare’s IPFS Gateway
Today we’re excited to introduce Cloudflare’s IPFS Gateway, an easy way to access content from the the InterPlanetary File System (IPFS) that doesn’t require installing and running any special software on your computer....
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September 17, 2018 1:00 PM
Welcome to Crypto Week
The Internet is an amazing invention. We marvel at how it connects people, connects ideas, and makes the world smaller. But the Internet isn’t perfect. It was put together piecemeal through publicly funded research, private investment, and organic growth that has left us with an ...
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August 10, 2018 11:00 PM
A Detailed Look at RFC 8446 (a.k.a. TLS 1.3)
TLS 1.3 (RFC 8446) was published today. This article provides a deep dive into the changes introduced in TLS 1.3 and its impact on the future of internet security....
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June 29, 2018 1:00 PM
Cryptocurrency API Gateway using Typescript+Workers
If you followed part one, I’ve set up an environment to write TypeScript with tests and deploy to the Cloudflare Edge using npm run upload. In this post, I’ll expand on one Worker Recipe even further....
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June 05, 2018 2:46 PM
Introducing DNS Resolver for Tor
As was mentioned in the original 1.1.1.1 blog post, our policy is to never write client IP addresses to disk and wipe all logs within 24 hours. Still some folks might not want to reveal their IP address to the resolver at all. This is why we are launching a Tor hidden service for...
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April 24, 2018 10:31 PM
BGP leaks and cryptocurrencies
Over the few last hours, a dozen news stories have broken about how an attacker attempted (and perhaps managed) to steal cryptocurrencies using a BGP leak....
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March 27, 2018 12:00 PM
A Solution to Compression Oracles on the Web
Compression is often considered an essential tool when reducing the bandwidth usage of internet services. The impact that the use of such compression schemes can have on security, however, has often been overlooked. ...
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March 23, 2018 2:45 PM
Introducing Certificate Transparency and Nimbus
Certificate Transparency (CT) is an ambitious project to help improve security online by bringing accountability to the system that protects HTTPS. Cloudflare is announcing support for this project by introducing two new public-good services....
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December 28, 2017 6:22 PM
How "expensive" is crypto anyway?
I wouldn’t be surprised if the title of this post attracts some Bitcoin aficionados, but if you are such, I want to disappoint you. For me crypto means cryptography, not cybermoney, and the price we pay for it is measured in CPU cycles, not USD....
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December 26, 2017 8:30 PM
Why TLS 1.3 isn't in browsers yet
Upgrading a security protocol in an ecosystem as complex as the Internet is difficult. You need to update clients and servers and make sure everything in between continues to work correctly. The Internet is in the middle of such an upgrade right now. ...
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December 26, 2017 4:53 PM
Concise (Post-Christmas) Cryptography Challenges
It's the day after Christmas; or, depending on your geography, Boxing Day. With the festivities over, you may still find yourself stuck at home and somewhat bored. ...
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December 24, 2017 4:57 PM
TLS 1.3 is going to save us all, and other reasons why IoT is still insecure
As I’m writing this, four DDoS attacks are ongoing and being automatically mitigated by Gatebot. Cloudflare’s job is to get attacked. Our network gets attacked constantly....
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November 10, 2017 11:06 AM
On the dangers of Intel's frequency scaling
While I was writing the post comparing the new Qualcomm server chip, Centriq, to our current stock of Intel Skylake-based Xeons, I noticed a disturbing phenomena....
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