The Story of Two Outages

Published on by Louis Poinsignon.

Over the last two days, Cloudflare observed two events that had effects on global Internet traffic levels. Cloudflare handles approximately 10% of all Internet requests, so we have significant visibility into traffic from countries and networks across the world. On Tuesday, September 5th, the government of Togo decided to restrict Internet access in the country following political protests. The government blocked social networks and rate-limited traffic, which had…

SIDH in Go for quantum-resistant TLS 1.3

Published on by Henry de Valence.

This blog post presents a new cryptography primitive that we open sourced: p751sidh. The Quantum Threat Most of today's cryptography is designed to be secure against an adversary with enormous amounts of computational power. This means estimating how much work certain computations (such as factoring a number, or finding a discrete logarithm) require, and choosing cryptographic parameters based on our best estimate of how much work would be…

Portland (Oregon): Cloudflare's 117th Data Center!

Published on by Nitin Rao.

Even as the luckiest amongst us across the US West Coast dashed off to Oregon to be closer to the solar eclipse path of totality, Cloudflare engineers were busy turning up our newest data center in Portland. This deployment serves as our 27th data center in North America alone, and our 117th globally. It also provides additional redundancy to our Seattle and San Jose data centers, while increasing…

One way to help Hurricane Harvey victims

Published on by Patrick Lu.

Photo Credit: Texas Military Department (Flickr) Hurricane Harvey hit Texas last Friday as a Category 4 storm. Although Harvey's category was quickly downgraded, the storm lingered around for days, bringing 50 inches of rain to the greater Houston area. As someone who was born in Houston, it's hard to see my former city hit with such destruction, and to know that many of my friends and fellow Houstonians…

The WireX Botnet: How Industry Collaboration Disrupted a DDoS Attack

Published on by Jaime Cochran.

Updated October 2017: The Cyberwire Research Saturday Podcast: Introduction On August 17th, 2017, multiple Content Delivery Networks (CDNs) and content providers were subject to significant attacks from a botnet dubbed WireX. The botnet is named for an anagram for one of the delimiter strings in its command and control protocol. The WireX botnet comprises primarily Android devices running malicious applications and is designed to create DDoS traffic. The…