On November 1, 2018 at 7:33 am MDT, ClickFunnels was subject to a Denial of Service (DoS) attack. The attack targeted the user sign in functionality, resulting in a 130,000% increase in traffic to that endpoint. The overall increase in total traffic to the entire ClickFunnels platform was 2,600% in less than a minute. This flood of targeted traffic overwhelmed our web servers and resulted in the application being unavailable for approximately 27 minutes. Corrective actions taken by the ClickFunnels team restored most functionality by 8:00 am MDT. Due to the severity and ongoing nature of the attack and the methods required to address it, some customers may have experienced problems with slow response times or missing images until approximately 10:00 am MDT. At that time, the ClickFunnels platform returned to normal operation.