CloudFlare: Happy 3rd Birthday

Published on by Matthew Prince.

Today is CloudFlare's birthday. We opened to the public exactly three years ago today, September 27, 2010. In those three years we've grown to power more than 1.5 million websites and sit in front of more than 4% of all web requests. Three years ago, however, those first signups were terrifying. Early on we realized that if we were going to bring CloudFlare&…

Why some cryptographic keys are much smaller than others

Published on by John Graham-Cumming.

If you connect to CloudFlare's web site using HTTPS the connection will be secured using one of the many encryption schemes supported by SSL/TLS. When I connect using Chrome I get an RC4_128 connection (with a 128-bit key) which used the ECDHE_RSA key exchange mechanism (with a 2,048-bit key) to set the connection up. If you're not familiar with the…

Why secure systems require random numbers

Published on by John Graham-Cumming.

If you've been following recent news about technical spying by the US National Security Agency and the UK's Government Communications Headquarters you may have come across a claim that the NSA was involved in weakening a random number generator. The obvious question to ask is... why mess with random number generation? The answer is rather simple: good random numbers are fundemental to almost all…

SXSW 2014: Get your PanelPicker votes in today!

Published on by Kristin Tarr.

CloudFlare is headed to the Interactive portion of SXSW in Austin from March 7-11, 2014. We are very excited to share some of the knowledge and experiences we’ve gained since our CloudFlare journey began. We have five, hot topic panel submissions that are in the running, so if any of the topics below sound interesting, cast your vote today. About the 2014 SXSW PanelPicker: The …

Details Behind Today's Internet Hacks

Published on by Matthew Prince.

When I woke up this morning I had no idea I'd be on a video conference with CloudFlare, OpenDNS, Google, GoDaddy, Twitter tech folks all day— Rajiv Pant (@rajivpant) August 28, 2013 At 1:19pm (PDT) today, a researcher noticed that the New York Times' website wasn't loading. We know the New York Times tech team, so we sent an email to…