The Chinese Ministry of State Security has released a series of warnings highlighting the vulnerability of government meetings to high-tech surveillance. The ministry described a scenario in which invisible lasers are directed at glass windows to capture and transmit audio from private rooms, effectively turning windows into microphones. This alert is part of a broader push by the Chinese government to tighten security protocols around classified documents and sensitive policy discussions.

To counter these threats, the ministry is encouraging government departments and state-linked entities to invest in specialized detection equipment. This includes devices capable of identifying hidden cameras, tracking unauthorized signals from smartphones, and deploying 'laser shields' designed to block or scramble eavesdropping attempts. The initiative reflects a growing concern within the Chinese state apparatus regarding the potential for foreign intelligence agencies to intercept internal communications.

While the ministry emphasizes the necessity of these measures for national security, the report highlights a booming domestic industry focused on counter-surveillance technology. This market includes everything from iPhone detectors, which scan for unauthorized recording devices, to physical shielding materials. The government’s focus on these tools suggests that the state views the threat of electronic espionage as a persistent and evolving challenge to its internal stability and decision-making processes.