China's Giant Pinduoduo Exploits 0days to Get One Billion Users’ Personal Data

The source[0] has a more clear description about what is being currently exploited:

    In the end, the Internet vendor used the above-mentioned series of concealed hacking techniques to achieve:
    
    Concealed installation, increase installed capacity
    Counterfeit boost  DAU/MAU
    Users cannot uninstall
    Attacking Competitor Apps
    Steal user privacy data
    Evasion of privacy compliance regulations
    and other suspected illegal purposes.

[0] https://mp.weixin.qq.com/s/P_EYQxOEupqdU0BJMRqWsw