> For the complete documentation index, see [llms.txt](https://docs.serverlessapigateway.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.serverlessapigateway.com/glossary/e/endpoint-security.md). # Endpoint Security Endpoint security refers to the practice of protecting network entry points -- including end-user devices, servers, and API endpoints -- from unauthorized access and malicious activity. In the traditional IT sense, this involves securing laptops, desktops, and mobile devices with antivirus, encryption, and access controls. In the context of APIs, endpoint security focuses on protecting API endpoints from threats such as injection attacks, credential stuffing, data exfiltration, and denial-of-service attacks. This includes implementing authentication, input validation, encryption in transit (TLS), and monitoring for anomalous request patterns. API gateways serve as a centralized enforcement point for endpoint security. They can validate incoming requests, strip malicious headers, enforce content-type restrictions, and block suspicious traffic before it reaches backend services. In serverless architectures, where backend functions are stateless and ephemeral, the gateway is often the primary layer of defense. Web Application Firewall (WAF) rules can be applied at the gateway to protect against common attack vectors. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.serverlessapigateway.com/glossary/e/endpoint-security.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.