The plea for help arrived last summer. “I am in Myanmar and work for a fraud company,” a Chinese human-trafficking victim wrote in a short email sent from within the Tai Chang scam compound. Like thousands of others in the region, they were promised legitimate work only to find themselves tricked into modern slavery and forced to scam people online for hours every day. Tai Chang, which backs on to the Myanmar-Thailand border, has been linked to incidents of torture. “I’m not safe, I’m chatting w...