Which network is NOT used for classified information sharing?

The Global Wide Area Network (GWAN) is not utilized for the sharing of classified information. Instead, it is designed primarily for unclassified data and communications, serving as an operational network that provides access to various non-sensitive information and systems.

On the other hand, SIPRNet (Secret Internet Protocol Router Network) and JWICS (Joint Worldwide Intelligence Communications System) are dedicated networks specifically created for the transmission of classified information. SIPRNet handles secret-level communications, while JWICS supports top-secret communications. Similarly, Intelink functions as an intelligence community-specific network that allows users to share both classified and unclassified data, emphasizing that it also falls under the category of classified information sharing. Thus, GWAN stands out as the option not associated with classified information sharing.