Description: A malformed request is an HTTP request that does not conform to the standards of the HTTP protocol. This can occur for various reasons, such as syntax errors, incorrect headers, or improperly formatted parameters. HTTP requests are fundamental for communication between clients and servers on the web and must follow a specific format to be interpreted correctly. A malformed request can result in the server being unable to process the request, leading to errors in page loading or the execution of web applications. The main characteristics of a malformed request include the lack of a valid HTTP method (such as GET or POST), the absence of a proper URL, or the inclusion of disallowed characters. The relevance of this concept lies in its impact on user experience and the security of web applications, as malformed requests can indicate attempts to attack or exploit vulnerabilities. Therefore, it is crucial for developers and system administrators to understand how to handle and prevent these situations to ensure the optimal operation of their online services.