China is experiencing a boom in the “secrecy industry” driven by growing concerns over espionage and information leaks, as highlighted by a recent warning from the Ministry of State Security. The ministry demonstrated a simulated scenario involving laser-based eavesdropping, where confidential meetings can be compromised through glass windows. This has spurred demand for countermeasures, ranging from technology that detects hidden cameras – including those in iPhones – to sophisticated laser shielding systems. The industry aims to protect sensitive government and corporate information, countering threats both from foreign entities and internal actors. This increased focus on security reflects a broader emphasis on national security within China. The demand for these technologies signals a heightened awareness of surveillance risks and a proactive response from Chinese authorities and businesses. The Ministry of State Security warns government departments and entities to brace themselves for increasingly sophisticated methods of information theft.