The transcript discusses China's alleged espionage on U.S. citizens through Caribbean phone networks, based on research by Gary Miller. China reportedly uses state-controlled operators to send signaling messages to U.S. subscribers, often when they are abroad. These messages, typically used for connecting users, can also track and monitor communications. China is said to favor targeted espionage, leveraging its ties with Caribbean countries to conduct these activities.

What is the primary source of the newspaper's article on China's espionage activities?

• A government report

• Research by Gary Miller

• An anonymous tip

• A leaked document

How does China reportedly send signaling messages to U.S. subscribers?

• Via Caribbean phone networks

• Through email

• Using social media

• Through satellite communication

What are signaling messages primarily used for in telecom networks?

• Locating mobile phones and connecting users

• Streaming videos

• Sending text messages

• Broadcasting news

What can some signaling messages be used for, according to the transcript?

• Enhancing network speed

• Tracking, monitoring, or intercepting communications

• Reducing data usage

• Improving call quality

Why does China favor using Caribbean networks for its espionage activities?

• Due to their proximity to the U.S.

• Because of close ties in trade and technology investment

• Because they are unregulated

• Due to their advanced technology