The head of the U.S. National Counterintelligence and Security Center, William R. Evanina, revealed that the Chinese Ministry of State Security (MSS) was super aggressive on LinkedIn. The use of social networks by nation states, competitors, and criminal entities has been one of the primary routes to reaching out and touching targets of interest, often your trusted insider. Evanina: Social networks are a targeteers dream; be cautious when engaging with unknown individuals on social networks.”]
Source: https://www.csoonline.com/article/3302164/chinas-mss-using-linkedin-against-the-us.html