February 23, 2017 11:01PM
Incident report on memory leak caused by Cloudflare parser bug
Last Friday, Tavis Ormandy from Google’s Project Zero contacted Cloudflare to report a security problem with our edge servers. He was seeing corrupted web pages being returned by some HTTP requests run through Cloudflare....
January 01, 2017 10:40PM
How and why the leap second affected Cloudflare DNS
At midnight UTC on New Year’s Day, deep inside Cloudflare’s custom RRDNS software, a number went negative when it should always have been, at worst, zero. A little later this negative value caused RRDNS to panic....
June 21, 2016 7:03AM
A Post Mortem on this Morning's Incident
We would like to share more details with our customers and readers on the internet outages that occurred this morning and earlier in the week, and what we are doing to prevent these from happening again....
July 06, 2015 10:30PM
The Internet is a cooperative system: CNAME to Dyn DNS outage of 6 July 2015
Today, shortly after 21:00 UTC, on our internal operations chat there was a scary message from one of our senior support staff: "getting DNS resolution errors on support.cloudflare.com", at the same time as automated monitoring indicated a problem....
August 27, 2013 7:15PM
Details Behind Today's Internet Hacks
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 check in. A few minutes later, the CTO of the NYT called us back....