Germany’s domestic intelligence service (BfV) has warned companies to exercise caution when dealing with authoritarian foreign governments such as China. German companies should be cautious with mandatory tax software required by the Chinese government, for instance, since those programmes risk giving Chinese authorities access to internal company information, the BfV’s vice president, Sinan Selen, said on Wednesday in Berlin. “We are increasingly seeing attempts to influence politics, business and science by illegitimate means, but also classic espionage,” Selen said at the start of a joint e…