September 17, 2012 8:17 PM
Yesterday I posted a post mortem on an outage we had Saturday. The outage was caused when we applied an overly aggressive rate limit to traffic on our network while battling a determined DDoS attacker. ...
August 28, 2012 5:44 PM
CloudFlare's I'm Under Attack mode allows our customers to, at the click of a button, tell us that they are experiencing an attack and enable automatic protection. It works by slowing down visits to the web site that's under attack and performing extra work to identify malicious visitors. ...
August 16, 2012 8:58 AM
Recently, I've taken a look at DDoS attacks against CloudFlare sites at the IP level and the source of those attacks. The worst time for those DDoS attacks is the Wednesday Witching Hour and because of source IP address forgery most of the attacks seem to come from Mars. ...
August 06, 2012 2:06 PM
Following on from my recent post about when attacks hit CloudFlare, here's a follow up looking at where they come from. Or at least where they say they come from. Looking at attack statistics for the month of July 2012 the largest source of attacks is Mars....
August 03, 2012 3:06 PM
Data from inside CloudFlare's network shows that over 40% of the time there's a denial of service attack happening and directed at us. And that's just up to network layer 4 (i.e. it doesn't include more sophisticated attacks targeting applications themselves at layer 7)....
November 16, 2011 6:59 PM
The United States House of Representatives is considering the Stop Online Piracy Act, known as SOPA. Companies including Google, Zynga, Facebook, Yahoo, AOL, and Mozilla, along with organizations like the Electronic Frontier Foundation (EFF) have been sharply critical of the law....
May 18, 2011 5:16 PM
We always talk about how CloudFlare gets smarter, and we do that in a variety of ways. One of the ways is that we look at changes in traffic to a site. If there is a big change, then our system automatically starts to investigate whether it is legitimate traffic or an attack. ...
