"We are looking for someone knowledgeable in high tech who is willing to betray their country and sell us their secrets." OK, maybe not that blatant, but apparently the Chinese Communist Party is recruiting people to create fake accounts (and fake companies) to recruit people who know state and tech secrets .
Other posts: https://community.isc2.org/t5/forums/recentpostspage/user-id/1324864413
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and here I am worried about being targeted by "tech training companies" out of India offering "guaranteed certification" training... now I have to worry about being asked to pass secrets through LinkDin chat... what next?
If something in the profile or contact does not appear legit don't accept the invite and also look into reporting them. Also depending on your business/function consider not using any social platforms all together.