Didi is banned from the app store. Oil prices rise after supply talks are abandoned. Another big ransomware attack.

Julia Chatterley is live from New York. Here are the top business news stories today!

Didi dumped! China's cyber clampdown on Didi sends US shares below their IPO price. OPEC ordeal! Oil prices rise after supply talks are abandoned. Cyber shock - another big ransomware attack, a $70 million demand.

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