---
title: 2023-05-15 - Emergency · Cloudflare DDoS Protection docs
lastUpdated: 2025-02-18T19:39:49.000Z
chatbotDeprioritize: false
source_url:
  html: https://developers.cloudflare.com/ddos-protection/change-log/http/2023-05-15-emergency/
  md: https://developers.cloudflare.com/ddos-protection/change-log/http/2023-05-15-emergency/index.md
---

| Rule ID | Description | Previous Action | New Action | Notes |
| - | - | - | - | - |
| ...1fc1e601 | HTTP requests with unusual HTTP headers or URI path (signature #31). | N/A | block | |
| ...863134d5 | HTTP requests from known bad user agents. | block | block | Widen detection scope. |
| ...bb3cefd0 | HTTP requests with unusual HTTP headers or URI path (signature #53). | N/A | block | |
| ...d2f294d7 | HTTP requests trying to impersonate browsers. | ddos\_dynamic | ddos\_dynamic | Extend the rule to catch attacks across multiple subdomains. |
| ...d2f294d7 | HTTP requests trying to impersonate browsers. | ddos\_dynamic | ddos\_dynamic | Expand the filter to catch more attacks. |
| ...f2494447 | HTTP requests attempting to bypass the cache. | ddos\_dynamic | ddos\_dynamic | Make rule more accurate when blocking attacks. |
