How to Secure and Protect Your API Setup

how to protect your api

Today’s software developers create applications in a way that uses tools such as microservices and containers which require APIs. Therefore, steps needed to protect API (application programming interfaces) is increasingly important.

The Importance of API Security

Organizations routinely use APIs to transfer data and connect to services. APIs therefore pose an attractive target to hackers, making them a common cause of major breaches of sensitive data such as medical and financial records. Not all APIs should be protected in the same way, as the best approach to API security depends on the type of data the API handles. For example, an API that tracks your physical location should have greater security than one that tracks the contents of the refrigerator.

Open Authorization (OAuth) is currently the open standard for delegating access to web APIs, which handle the transfer of data through APIs to the internet. It allows users to grant access to web resources to third parties without needing to share passwords with that party. APIs are usually implemented as Representational State Transfer (REST) or Simple Object Access Protocol (SOAP) APIs.


SOAP APIs use Web Services Security (WS Security) to make themselves more secure. These built-in protocols use a set of rules to provide confidentiality and authentication for the data these APIs handle. SOAP APIs support standards developed by major international organizations such as the Organization for the Advancement of Structured Information Standards (OASIS) and World Wide Web Consortium (W3C). They also verify the authentication and authorization of users through a combination of Security Assertion Markup Language (SAML) tokens, the Extensible Markup Language (XML) tokens and XML signatures.

SOAP APIs generally have more comprehensive security than REST APIs, although they also require more management. SOAP APIs are therefore most often used to handle particularly sensitive data.


REST APIs primarily rely on Hypertext Transfer Protocol Secure (HTTPS) and Transport Layer Security (TLS) for encryption, which is often used to protect credit information on shopping websites. This approach to security keeps Internet connections private, while also ensuring that the data sent between two systems remains encrypted and unmodified. A URL that begins with the string “HTTPS” is protected in this manner. REST APIs also use the file format JavaScript Object Notation (JSON), which makes it easier to transfer data with web browsers. The combination of HTTP and JSON eliminates the need for rest APIs to store or repackage data, making them faster than SOAP APIs.

Best Practices

The best practices in API security generally relate to the development of a secure operating environment that separates authentication and authorization. For example, an API gateway is typically used to enforce API traffic by authenticating it and controlling the use of the APIs. Signatures ensure that only authorized users are able to decrypt and modify data. Tokens also establish trusted identities, while controlling access to services and resources.

Additional best practices in API security include the identification of vulnerabilities in API components, drivers, networks and operating systems. Packet sniffers are especially useful in tracking data leaks, which are a common source of vulnerabilities. Rules on throttling API calls can protect them from Denial-of-Service (DoS) attacks and traffic spikes. Quotas on calling an API can help identify when that API is being abused intentionally by an attack or inadvertently by a programming bug.

We hope you found this article helpful about protecting your API. If you ever feel you need more IT assistance for your firm or business, feel free to contact our team of experts by emailing or calling us at (800) 421-7151.


WAMS, Inc.

The experts at WAMS, Inc. all have a background in the legal industry and understand the software and the demands that come along with it. That’s why all our clients receive a dedicated account manager and engineer with specific planning that works for your business needs. We didn’t break into the tech world to pinch pennies from clients. We go into every partnership to help their business scale gracefully. Your company growth is our company growth, always.