The MSS recruits new intelligence officers primarily from major universities, police and military academies. In March 2009, former MSS operative Li Fengzhi told the
Washington Times in an interview that the MSS was engaged in counterintelligence, the collection of secrets and technology from other countries, and repressing internal dissent within China. The internal repression, according to Li, includes efforts against
house churches, the
underground church and the
Falun Gong religious group, and
censoring the Internet. Li emphasized that MSS's most important mission is, "to control the Chinese people to maintain the rule of the Communist Party." In 2012, an executive assistant to MSS vice minister Lu Zhongwei was found to have been passing information to the CIA. Lu Zhongwei was not formally charged, but that incident was said to have infuriated
Hu Jintao and led to a tightening on information dissemination and increased counterintelligence activities in Beijing and abroad. The
Shanghai State Security Bureau (SSSB) of the MSS has repeatedly been involved in both failed and successful attempts to recruit foreign agents. Companies such as
Huawei,
China Mobile, and
China Unicom have been implicated in MSS intelligence collection activities. In 2019, according to a report released by the
European External Action Service, there were an estimated 250 MSS spies operating in Brussels. In September 2020, a journalist, a Chinese MSS operative and her Nepalese informant were arrested in India for providing classified information about Indian army deployments in
Doklam area and India's
Ministry of External Affairs to two officers of Yunnan State Security Department (YSSD) of the MSS. In December 2020, 10 MSS Operatives of Xinjiang State Security Department (XSSD) were arrested in
Kabul,
Afghanistan by the
National Directorate of Security. During questioning, one operative told the interrogators that they were gathering information about
al Qaeda, the
Taliban, and the
Turkistan Islamic Party in Kunar and Badakhshan Provinces, and wanted to trap and assassinate high-level members of Turkistan Islamic Party. At least two of the operatives were also in contact with the
Haqqani network for this job. After days of negotiations between Afghanistan and China, all of them were pardoned and were flown out of the country in a plane arranged by the Chinese government. In late April 2021, the Ministry of State Security announced that it was introducing several new measures to fight alleged infiltration by "hostile forces" of Chinese companies and other institutions. These measures include drawing up a list of companies and organizations considered to be at risk of foreign infiltration and requiring them to take security measures. In addition, staff travelling on business trips to the
Five Eyes countries (the United States, United Kingdom, Australia, Canada, and New Zealand) have been ordered to report all contact with foreign personnel, participate in anti-espionage seminars, and leave mobile phones, laptops, and USB drives at home before traveling abroad. In December 2023, a joint investigation by
Financial Times,
Der Spiegel and
Le Monde reported that Belgium former senator
Frank Creyelman accepted bribes from MSS for three years to influence discussions within the
European Union.
Cyber activities In 2017, the cyberespionage threat group known as Gothic Panda or APT3 was determined to have
nation-state level capabilities and to be functioning on behalf of the MSS by researchers. Regulations issued in September 2021 require operators of
critical internet infrastructure in China to establish cybersecurity teams. MSS, along with the
Ministry of Public Security, are required to vet the personnel on these cybersecurity teams. In March 2024, the
United States Department of the Treasury's
Office of Foreign Assets Control (OFAC) and UK government sanctioned an MSS front company called Wuhan Xiaoruizhi Science and Technology and affiliated individuals for placing malware in critical infrastructure and
breaching the UK
Electoral Commission.
Social media and film In July 2023, the MSS opened a
WeChat account, where it wrote its first post that it wishes to popularize counterintelligence among the population and make such activity "normal" with systems of rewards. In another post in September, the MSS criticized the policies of the United States towards China, saying that the US was "decoupling and disconnecting at the economic level, ganging up at the political level, deterrence and containment at the security level, discrediting and disparaging at the public opinion level, and constraining and locking down at the rules level". The ministry's WeChat posts receive millions of views. to its official WeChat channel; which would subject individuals to scrutiny and questioning by state security authorities, including but not limited to: endangering national security, illegally acquiring or holding state secrets, committing or assisting espionage, refusing to cooperate in an espionage investigation, leaking state secrets related to counter-espionage and intelligence works and "failing to take security precautions against spying". In October 2025, the MSS deployed an
AI-generated anchor in uniform called "Agent 012339" on its WeChat channel to deliver national security narratives. In March 2026, the thriller
Scare Out was the first Chinese film to receive public backing from the MSS.
Surveillance of dissidents and ethnic minorities Domestically, the MSS undertakes surveillance of ethnic minorities, especially in
Tibet and
Xinjiang. According to
Nicholas Eftimiades, "[o]ne of the MSS's responsibilities has been penetrating Chinese dissident groups abroad — what they call the '
five poisons': democracy advocates, Taiwan, Tibetans, Uyghurs and Falun Gong." In the United States, MSS officers were reported to have worked with students affiliated with local university chapters of the
Chinese Students and Scholars Association to surveil other students. During the
2008 Summer Olympics torch relay, MSS agents coordinated counter-protesters to disrupt pro-
Tibetan independence demonstrations in San Francisco. In December 2023, a joint investigation by
Financial Times,
Der Spiegel and
Le Monde reported an agent of the
Zhejiang branch of the MSS had been tasked with discrediting German anthropologist
Adrian Zenz.
United front activities The MSS also leverages so-called "
united front" work for intelligence activity. In 1939, Zhou Enlai espoused "nestling intelligence within the united front" while also "using the united front to push forth intelligence." According to Australian analyst
Alex Joske, "the united front system provides networks, cover and institutions that intelligence agencies use for their own purposes." Joske added that "united front networks are a golden opportunity for Party's spies because they represent groups of Party-aligned individuals who are relatively receptive to clandestine recruitment."
Roger Faligot stated that the aftermath of the
1989 Tiananmen Square protests and massacre led to the "growing use of party organizations, such as the United Front Work Department and friendship associations, as fronts for intelligence operations." == Organization ==