July 10, 2014 4:00 AM
Today we’re proud to introduce CFSSL—our open source toolkit for everything TLS/SSL. CFSSL is used internally by CloudFlare for bundling TLS/SSL certificates chains, and for our internal Certificate Authority infrastructure....
June 18, 2014 4:00 PM
I started using the Internet when I was young—in the early 1990s, before I was a teenager. I was drawn to security for two main reasons....
June 18, 2014 4:00 AM
We're excited to announce that CloudFlare has acquired the Trusted Computing and virtual private network (VPN) as a service company CryptoSeal. ...
May 27, 2014 10:59 AM
Education, expertise, and community: these themes define Meetups at CloudFlare. Meetups in our office bring together industry leaders, academics, and field experts to examine topics ranging from the Go programming language, to databases, to cryptography, and more....
May 19, 2014 2:00 PM
Two weeks ago we changed our TLS configuration to deprioritize the RC4 encryption method because it is widely thought to be vulnerable to attack. At the time we had an internal debate about turning off RC4 altogether, but statistics showed that we couldn't....
April 17, 2014 12:44 AM
Eleven days ago the Heartbleed vulnerability was publicly announced. Last Friday, we issued the CloudFlare Challenge: Heartbleed and simultaneously started the process of revoking and reissuing all the SSL certificates....
March 10, 2014 4:30 PM
This blog post is dedicated to the memory of Dr. Scott Vanstone, popularizer of elliptic curve cryptography and inventor of the ECDSA algorithm. He passed away on March 2, 2014....
February 14, 2014 1:00 AM
At CloudFlare, we are always looking for ways to improve the security of our customers’ websites. One of the features we provide is the ability to serve their website encrypted over SSL/TLS. ...
January 29, 2014 12:00 PM
Back in 2011, the BEAST attack on the cipher block chaining (CBC) encryption mode used in TLS v1.0 was demonstrated. At the time the advice of experts (including our own) was to prioritize the use of RC4-based cipher suites....
January 06, 2014 12:00 PM
There has been a lot of news lately about nefarious-sounding backdoors being inserted into cryptographic standards and toolkits. One algorithm, a pseudo-random bit generator, Dual_EC_DRBG, was ratified by the National Institute of Standards and Technology (NIST) in 2007. ...
November 21, 2013 9:00 AM
At CloudFlare, we are always looking for better ways to secure the data we’re entrusted with. This means hardening our system against outside threats such as hackers, but it also means protecting against insider threats. ...
October 24, 2013 3:00 AM
Elliptic Curve Cryptography (ECC) is one of the most powerful but least understood types of cryptography in wide use today. At CloudFlare, we make extensive use of ECC to secure everything from our customers' HTTPS connections to how we pass data between our data centers....
