All-in-one messaging apps in China are ubiquitous and know everything there is to know about a user’s digital life.  But how well these services protect this valuable information has come under question after a researcher discovered an open database of 340 million private chat records. Private messages, personal identification information and even locations of the users were left out in the open for anyone to access until the researcher, Victor Gevers of the GDI Foundation, reported it to a…