CHONGQING, China—On the outskirts of this southwestern Chinese hub lie the student factories. Schools send thousands of teenagers here to put together electronic devices for some of the world’s largest brands. Many students say they are given no choice.
New and subtle business models are emerging for cybercriminals, boosting their sales of stolen data and offering new ways to inflict damage on target organisations. Hackers are commercialising stolen data by selling it back to legitimate businesses, one security expert has warned.