Cloudflare’s customers recognize that they need to protect the confidentiality and integrity of communications with their web visitors. The widely accepted solution to this problem is to use the SSL/TLS protocol to establish an encrypted HTTPS session, over which secure requests can then be sent. Eavesdropping is protected against as only those who have access […]
Tag Archives: ssl
How to make your site HTTPS-only
The Internet is getting more secure every day as people enable HTTPS, the secure version of HTTP, on their sites and services. Last year, Mozilla reported that the percentage of requests made by Firefox using encrypted HTTPS passed 50% for the first time. HTTPS has numerous benefits that are not available over unencrypted HTTP, including […]
Domain Validation: SSL’s Other Job
SSL certificates are a hot topic today. Website owners are becoming increasingly aware that collecting information on non-HTTPS secured pages is a bad idea and the larger web ecosystem is definitely moving in the direction of full web encryption. Google has indicated they’re giving a ranking boost to HTTPS encrypted sites with heavier rankings likelyRead […]
Introducing CloudFlare Origin CA
Free and performant encryption to the origin for CloudFlare customers In the fall of 2014 CloudFlare launched Universal SSL and doubled the number of sites on the Internet accessible via HTTPS. In just a few days we issued certificates protecting millions of our customers’ domains and became the easiest way to secure your website with […]
Sucuri Firewall: Free LetsEncrypt SSL Certs for Everyone
Last year we partnered and sponsored the LetsEncrypt initiative. Today we’re happy to announce that we have fully integrated with them and we are now offering their free SSL Certificates to all customers who leverage the Sucuri Firewall. We’re very excited about this integration and we have mass-enabled their certificates for all of our customers that didRead […]
Beware of Unverified TLS Certificates in PHP & Python
Web developers today rely on various third-party APIs. For example, these APIs allow you to accept credit card payments, integrate a social network with your website, or clear your CDN’s cache. The HTTPS protocol is used to secure the connection with the API server. However, if your web app doesn’t verify the TLS certificate, aRead […]
Introducing CFSSL 1.2
Continuing our commitment to high quality open-source software, we’re happy to announce release 1.2 of CFSSL, our TLS/PKI Swiss Army knife. We haven’t written much about CFSSL here since we originally open sourced the project in 2014, so we thought we’d provide an update. In the last 20 months, we have added a ton of […]
TLS Certificate Optimization: The Technical Details behind “No Browser Left Behind”
Overview Back in early December we announced our “no browser left behind” initiative to the world. Since then, we have served well over 500 billion SHA-1 certificates to visitors that otherwise would not have been able to communicate securely with our customers’ sites using HTTPS. All the while, we’ve continued to present newer SHA-2 certificates […]
SHA-1 Deprecation: No Browser Left Behind
After December 31, 2015, SSL certificates that use the SHA-1 hash algorithm for their signature will be declared technology non grata on the modern Internet. Google’s Chrome browser has already begun displaying a warning for SHA-1 based certs that expire after 2015. Other browsers are mirroring Google and, over the course of 2016, will begin […]
Happy 5th Birthday, CloudFlare!
CloudFlare customers recorded videos to celebrate our first five years Today is September 27, 2015. It’s a rare Super Blood Moon. And it’s also CloudFlare’s birthday. CloudFlare launched 5 years ago today. It was a Monday. While Michelle, Lee, and I had high expectations, we would never have imagined what’s happened since then. In the […]
