Which NSA program could record the complete contents of all phone calls in an entire country?

• A. Mystic
• B. Bullrun
• C. Carnivore
• D. Stingray

Answer: (A)

Mass surveillance raises important questions about privacy, consent, and government accountability. Mystic is the NSA program described as capable of recording and storing the complete contents of all phone calls within a country, which exemplifies bulk data collection on a national scale. This kind of capability highlights the ethical tensions between security interests and civil liberties, underscoring the need for strong oversight, clear legal warrants, and limits on retention and access.

The other programs operate in different ways and don’t imply nationwide, all-call recording. Bullrun is about breaking or bypassing encryption, not archiving every call. Carnivore was a targeted intercept tool used by law enforcement to monitor specific communications through ISPs, not a nationwide archive. Stingray refers to a device used to identify or locate mobile devices by simulating a cell tower, capturing data from those devices in a given area, rather than recording every call across a country.