The BfV domestic intelligence service took the unusual step of naming individual profiles it says are fake and fake organisations to warn public officials about the risk of leaking valuable personal information via social media.
"Chinese intelligence services are active on networks like LinkedIn and have been trying for a while to extract information and find intelligence sources in this way," including seeking data on users' habits, hobbies and political interests, they said.
Nine months of research had found that more than 10,000 German citizens had been contacted on the LinkedIn professional networking site by fake profiles disguised as headhunters, consultants, think-tankers or scholars, the BfV said.
"There could be a large number of target individuals and fake profiles that have not yet been identified," they added.
Speaking in Beijing on Monday, Chinese Foreign Ministry spokesman Lu Kang said the accusations were baseless.
"We hope the relevant German organisations, particularly government departments, can speak and act more responsibly, and not do things that are not beneficial to the development of bilateral relations," Lu said.
Among the faked profiles whose details were published were that of "Rachel Li", identified as a "headhunter" at "RiseHR", and an "Alex Li", a "Project Manager at Center for Sino-Europe Development Studies".
A Reuters review of the profiles showed that some were connected to senior diplomats and politicians from several European countries. There was no way to establish whether contacts had taken place beyond the initial social media "add".
The warning reflects growing concern in European and western intelligence circles at Chinese covert activities in their countries and follows warnings from the U.S. Central Intelligence Agency over attempts by the economic giant's security services to recruit U.S. citizens as agents.
The BfV invited concerned users to contact them if they encountered social media profiles that seemed suspect.
(Reporting By Thomas Escritt; Additional reporting by Michael Martina in BEIJING; Editing by Matthew Mpoke Bigg & Simon Cameron-Moore)
(This story has not been edited by NDTV staff and is auto-generated from a syndicated feed.)
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