Hackers love the holidays
December 21, 2012 3:41 AM
Looking at the latest DDoS attack statistics from CloudFlare's network, it seems that hackers love the holidays....
Deep Inside a DNS Amplification DDoS Attack
October 30, 2012 7:54 AM
A few weeks ago I wrote about DNS Amplification Attacks. These attacks are some of the largest, as measured by the number of Gigabits per second (Gbps), that we see directed toward our network....
How to Launch a 65Gbps DDoS, and How to Stop One
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. ...
Turning "I'm Under Attack" into "I'm Doing Some Good"
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. ...
Saturday Night Fever: Layer 7 attacks against CloudFlare sites
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. ...
MORE POSTS
August 03, 2012 3:06 PM
The Wednesday Witching Hour: CloudFlare DoS Statistics
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)....
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December 21, 2011 11:04 PM
2011: The Year of the DDoS
As the year comes to a close, we've been assembling trend data for 2011. One of the most interesting has been the rise of denial of service (DDoS) attacks. Controlling for CloudFlare's growth, we've seen a 700% increase in DDoS attacks over the course of the year....
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November 16, 2011 6:59 PM
SOPA Could Create New Denial of Service Attack, Powered by Law not Botnets
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....
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May 18, 2011 5:16 PM
That's Freaking Awesome: CloudFlare Automatically Learns How to Stop New Attacks
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. ...
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