Alibaba shares fell as much as 9 per cent on Tuesday after a state media report that Chinese authorities had taken action against an individual surnamed Ma, but recouped losses after the report was revised to make clear it was not the company's founder. State broadcaster CCTV first reported that authorities in the city of Hangzhou, Alibaba's headquarters, had taken action against an individual surnamed Ma, whose name consisted of two Chinese characters, suspected of using the internet to engage in activities endangering national security. Investors quickly dumped their shares, causing the stock to crash by as much as 9.4…