You are a network security engineer at a large corporation. During a routine security audit, you discover that the company's internal network is vulnerable to replay attacks. The network uses a simple challenge$-$response authentication protocol.

Which of the following actions should you recommend to mitigate this vulnerability?

answer

Switch to a different authentication protocol like OAuth.

Implement SSL$/$TLS encryption for all data in transit.

Disable all client$-$side scripting.

Implement a time$-$based one$-$time password $($TOTP$)$ system.