summary: Old: This feature introduces a WebRequest.SecurityInfo API for [ControlledFrame](https://developer.chrome.com/docs/iwa/controlled-frame). It allows a web app to intercept an HTTPS, WSS or WebTransport request to a server, retrieve the server's certificate fingerprint (as verified by the browser), and then use that fingerprint to manually verify the certificate of a separate raw TCP/UDP connection to the same server. This provides a simple way for the app to confirm it's talkingto the correct server. New: This feature introduces a WebRequest.SecurityInfo API for [ControlledFrame](https://developer.chrome.com/docs/iwa/controlled-frame). It allows a web app to intercept an HTTPS, WSS, or WebTransport request to a server, retrieve the server's certificate fingerprint (as verified by the browser), and then use that fingerprint to manually verify the certificate of a separate raw TCP/UDP connection to the same server. This provides a simple way for the app to confirm it's communicatingwith the correct server.