Which function is the primary function of Cisco AMP threat Grid?

Automated email encryption is a function of email security gateways, not primarily Threat Grid.

Applying a real-time URI blacklist is a function of web security or firewall URL filtering, not Threat Grid's primary role.

Cisco AMP Threat Grid is a sandbox solution that performs dynamic analysis of suspicious files. It executes files in a safe environment to observe their behavior, identify malicious activities, and generate detailed reports on the malware's characteristics.

While Threat Grid's analysis involves observing network behavior, its core function is file analysis, not general network traffic monitoring.