ENCRYPTED INTERSTITIAL TECHNIQUES FOR WEB SECURITY

A method, non-transitory computer readable medium, device and system intercepts a request for a webpage including a protected resource. The request is sent from a client device to a server device. One or more link tags or other mechanisms corresponding to one or more sub-resources included in the webpage are generated. The webpage is encrypted. An interstitial page is served to the client device that includes an encrypted portion that includes the encrypted webpage, an unencrypted portion that includes the link tags, and instrumentation code that collects telemetry data when executed at the client device. The telemetry data is received from the client device and a threat analysis is performed on the telemetry data. A decryption key is transmitted to the client device in response to determining that the request is allowed, based on the performed threat analysis. The decryption key allows the client device to decrypt the encrypted webpage.