There is the so-called API security, which is responsible for protecting the integrity of APIs. Especially with web APIs that work over the Internet, security is not always guaranteed, so you should be sufficiently informed about it so that no information is disclosed to third parties. When web APIs are used, access must be allowed and delegated to specific people, this is done via the OAuth standard (Open Authorization). Here, third parties can be granted access without having to disclose passwords.
Depending on the API type, different formats are used to guarantee security. There are implementations of the type REST (Representational State Transfer) or SOAP (Simple Object Access Protocol).
REST APIs use HTTP as the format and support TLS encryption (Transport Layer Security), which ensures that the data being exchanged is encrypted. This security can be recognized by the “HTTPS” (HyperText Transfer Protocol Secure) designation.
SOAP APIs use Web Services Security (WS Security), which are built-in protocols that ensure confidentiality and authentication. A combination of XML encryption, XML signatures, and SAML tokens are used for this purpose.
To ensure API security, it is beneficial to have a trained API management team that is well versed in the subject and is solely concerned with ensuring that no errors or vulnerabilities occur.