Which OS Does CIA use?

The publication contains 27 documents from the CIA’s Grasshopper framework, which is used by the CIA to build customized and persistent malware payloads for the Microsoft Windows operating systems. Grasshopper focused on Personal Security Product (PSP) avoidance.

What operating system does FBI use?

The Federal Bureau of Investigations (FBI) warned of the security risks that organizations face if they continue to use the Windows 7 operating system despite its end of life (EOL) status.