Sources: at least nine state-run Chinese firms, including China Mobile, tell staff to limit use of Tencent’s domestic chat app Weixin, citing security concerns (Keith Zhai/Wall Street Journal)

Keith Zhai / Wall Street Journal:
Sources: at least nine state-run Chinese firms, including China Mobile, tell staff to limit use of Tencent’s domestic chat app Weixin, citing security concerns  —  Employees were told to disband chat groups over security concerns, as Beijing’s scrutiny into Tencent grows