Let’s start by examining exactly what a DDoS attack is and, importantly, what it is not.
DDoS stands for distributed denial of service but is often referred to as a simple denial of service. A DDoS attack consists of a website being flooded by requests during a short period of time, with the aim of overwhelming the site and causing it to crash. The ‘distributed’ element means that these attacks are coming from multiple locations at the same time, as compared to a DoS which comes from just one location.
If your site suffers a DDoS attack, you will receive thousands of requests from multiple sources over a period of minutes or sometimes hours. These requests aren’t the result of a website suddenly getting a spike in traffic: they are automated and will come from a limited number of sources, depending on the scale of the attack.
In this case study, we had a small WordPress e-commerce site which was running Easy Digital Downloads. The site typically only generated between 30-40 MB a day in bandwidth and a couple of hundred visitors per day. Back in June, it started using a lot of bandwidth out of the blue, without Google Analytics showing any additional traffic. The site instantly went to between 15-19 GB of data transfer a day! That’s an increase of 4650%. Not good. And it’s definitely not just a little increase in bot traffic. Thankfully, the owner was able to quickly spot this in Kinsta’s Analytics.
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