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Enable customizable security headers Go to Administration > System Settings > Security. Enter your HTTP Strict Transport Security (HSTS), Content Security Policy (CSP), or HTTP Public Key Pinning (HPKP) directive(s) in the corresponding field(s). ... Click Save at the bottom of the page.

Security Headers There are a number of security related headers that can be returned in the HTTP responses to instruct browsers to act in specific ways. However, some of these headers are intended to be used with HTML responses, and as such may provide little or no security benefits on an API that does not return HTML.

The exact values and syntax for the header depend on each API, so check your API's documentation to see the requirements. To enter a header, enter the key-value pair into the Headers section of the API Connector form. Simply add them, one under the other, in the Headers section of API Connector's Create Request screen:

HTTPS encrypts all message contents, including the HTTP headers and the request/response data.

An attacker can observe the size of the encrypted data and infer some information about the plaintext, such as cookies or passwords. To prevent compression attacks, TLS encrypts the headers before compressing them, which makes them less predictable and less compressible.

Security headers Strict-Transport-Security : This header tells the client application or browser how long it should remember that the API is only accessible through TLS protocol. ... X-Frame-Options : This header prevents rendering a page in frame and protects from clickjacking.

API security best practices Authenticate and authorize. ... Implement access control. ... Encrypt requests and responses. ... Validate the data. ... Assess your API risks. ... Share only necessary information. ... Choose your web services API. ... Record APIs in an API registry.