The final of two reports
It all started with a local Chinese official.
He couldn't figure out how his wife, who suspected him of having an affair, knew the contents of his private conversations.
"His wife knew things that he said in his car and office, including conversations over the telephone," recalls Qi Hong, a former journalist from Shandong province in eastern China, and a friend of the official.
So Qi asked a buddy who owned bug-detecting equipment to help.