The Cloudflare TLS 1.3 beta is run by a Go implementation of the protocol based on the Go standard library, crypto/tls. Starting from that excellent Go codebase allowed us to quickly start experimenting, to be the first wide server deployment of the protocol, and to effectively track the changes to the specification draft. Of course, […]
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Cloudflare Crypto Meetup #5: February 28, 2017
Come join us on Cloudflare HQ in San Francisco on Tuesday, Febrary 28, 2017 for another cryptography meetup. We again had a great time at the last one, we decided to host another. It’s becoming a pattern. We’ll start the evening at 6:00p.m. with time for networking, followed up with short talks by leading experts […]
DDoS Ransom: An Offer You Can Refuse
Cloudflare has covered DDoS ransom groups several times in the past. First, we reported on the copycat group claiming to be the Armada Collective and then not too long afterwards, we covered the “new” Lizard Squad. While in both cases the groups made threats that were ultimately empty, these types of security events can send […]
NANOG – the art of running a network and discussing common operational issues
The North American Network Operators Group (NANOG) is the loci of modern Internet innovation and the day-to-day cumulative network-operational knowledge of thousands and thousands of network engineers. NANOG itself is a non-profit membership organization; but you don’t need to be a member in order to attend the conference or join the mailing list. That said, […]
Protecting everyone from WordPress Content Injection
Today a severe vulnerability was announced by the WordPress Security Team that allows unauthenticated users to change content on a site using unpatched (below version 4.7.2) WordPress. CC BY-SA 2.0 image by Nicola Sap De Mitri The problem was found by the team at Sucuri and reported to WordPress. The WordPress team worked with WAF […]
TLS 1.3 explained by the Cloudflare Crypto Team at 33c3
Nick Sullivan and I gave a talk about TLS 1.3 at 33c3, the latest Chaos Communication Congress. The congress, attended by more that 13,000 hackers in Hamburg, has been one of the hallmark events of the security community for more than 30 years. You can watch the recording below, or download it in multiple formats […]
Firebolt: the fastest, safest ads on the web
Cloudflare’s mission is to help build a better Internet. That means a faster, more secure, open Internet world-wide. We have millions of customers using our services like free SSL, an advanced WAF, the latest compression and the most up to date security to ensure that their web sites, mobile apps and APIs are secure and […]
Introducing Accelerated Mobile Links: Making the Mobile Web App-Quick
In 2017, we’ve predicted that more than half of the traffic to Cloudflare’s network will come from mobile devices. Even if they are formatted to be displayed on a small screen, the mobile web is built on traditional web protocols and technologies that were designed for desktop CPUs, network connections, and displays. As a result, […]
Cloudflare’s Transparency Report for Second Half 2016 and an Additional Disclosure for 2013
Cloudflare is publishing today its seventh transparency report, covering the second half of 2016. For the first time, we are able to present information on a previously undisclosed National Security Letter (NSL) Cloudflare received in the 2013 reporting period. Wikipedia provides the most succinct description of an NSL: An NSL is an administrative subpoena issued […]
2017 and the Internet: our predictions
An abbreviated version of this post originally appeared on TechCrunch Looking back over 2016, we saw the good and bad that comes with widespread use and abuse of the Internet. In both Gabon and Gambia, Internet connectivity was disrupted during elections. The contested election in Gambia started with an Internet blackout that lasted a short […]

