July 02, 2019 3:50 PM
Starting at 1342 UTC today we experienced a global outage across our network that resulted in visitors to Cloudflare-proxied domains being shown 502 errors (“Bad Gateway”). The cause of this outage was deployment of a single misconfigured rule within the Cloudflare Web Application Firewall (WAF) ...
June 26, 2019 10:22 PM
On Monday we wrote about a painful Internet wide route leak. We wrote that this should never have happened because Verizon should never have forwarded those routes to the rest of the Internet. Today we will dive into the archived routing data and analyze it....
June 01, 2018 1:13 AM
Cloudflare is protected from attacks by the Gatebot DDoS mitigation pipeline. Gatebot performs hundreds of mitigations a day, shielding our infrastructure and our customers from L3 and L7 attacks. ...
March 01, 2017 3:27 PM
Last Thursday we released details on a bug in Cloudflare's parser impacting our customers. It was an extremely serious bug that caused data flowing through Cloudflare's network to be leaked onto the Internet....
February 23, 2017 11:01 PM
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....
June 21, 2016 6:03 AM
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 9:30 PM
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 6:15 PM
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. ...
May 31, 2013 11:10 AM
Today at 16:13 UTC a large amount of traffic began hitting our Los Angeles data center. We have an in-house team that monitors our network 24x7x365 and immediately all their alarms went off....
March 03, 2013 1:47 PM
This morning at 09:47 UTC CloudFlare effectively dropped off the Internet. The outage affected all of CloudFlare's services including DNS and any services that rely on our web proxy....
September 16, 2012 5:40 PM
Yesterday, around 16:36 GMT, we had an interruption to our network services. The interruption was caused by a combination of factors. First, we had an upstream bandwidth provider with some network issues that primarily affected our European data centers....
June 04, 2012 10:02 PM
A core value CloudFlare is that security information should be shared between organizations to make the entire Internet safer. That is how CloudFlare's systems work: if one site is attacked, data about that attack is immediately shared with the rest of the network so other sites ...
June 01, 2012 10:22 PM
This morning a hacker was able to access a customer's account on CloudFlare and change that customer's DNS records. The attack was the result of a compromise of Google's account security procedures....
May 02, 2012 8:41 PM
CloudFlare had an outage across much of our network today. The outage began at 20:19 (GMT). It affected approximately 75% of traffic to CloudFlare's network. The length of time for the outage varied depending on region, but the maximum period of downtime was approximately 15 minu...
February 24, 2012 4:08 PM
Last night was not our finest hour. Around 07:30 GMT, we were finishing up a push of a new DNS infrastructure. The core of what this new update was built to do is make DNS updates even faster. ...
August 24, 2011 11:54 PM
Early this morning word spread that there was a zero day exploit dubbed the "Apache Killer." The exploit uses malformed Apache byte-range headers to crash the web server. The exploit is effective against the latest versions of Apache as well as versions back to v1.3. ...
