> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://kb.challonge.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How Challonge Mitigates Against Malicious Requests

### Challonge has security protections to help guard valid users against online threats

![](https://storage.crisp.chat/users/helpdesk/website/99ea6ef0934f9800/untitled_1smzdk3.png)

||| **Are you seeing the message above when visiting challonge.com?** 
|| If so, then our Web Application Firewall is currently active and you should simply reload the page.

A Web Application Firewall (WAF) offers protection for web servers. It filters malicious requests such as Distributed Denial-of-Service (DDoS) attacks, Cross Site Scripting (XSS), SQL injection, user-based attacks, and many more. These types of cyber threats can be harmful for web servers and their users. As personal computers require users to install anti-virus programs or built-in firewall, Challonge relies on [StackPath](https://www.stackpath.com/products/ddos-protection/) for an extra layer of security.

The image denotes a validation process that aims to defend the Challonge application by blocking large-volume traffic of requests and data, occasionally preventing legitimate users from having access or performing certain tasks. Our operations team investigates and mitigates these attacks every single day to provide faster, and more importantly, safer access with Challonge.

We appreciate your patience and understanding about the security measures we have in place. If you have additional questions or believe you've been improperly restricted from certain access or features on Challonge please notify us via helpdesk[at]challonge.com.