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How to tell if you are under DDoS attack

A distributed denial-of-service (DDoS) attack is where a large number of computers or devices, usually controlled by a single attacker, attempt to access a website or online service all at once. This flood of traffic can overwhelm the website’s origin servers, causing the site to slow down or even crash.

​​ Common signs of an attack

Common signs that you are under DDoS attack include:

  • Your site is offline or slow to respond to requests.
  • There are unexpected spikes in the graph of Requests Through Cloudflare or Bandwidth in your Cloudflare Analytics app.
  • There are strange requests in your origin web server logs that do not match normal visitor behavior.