An attack which targeted users of the Telegram app on Wednesday might be linked to protests in Hong Kong that turned violent. That’s one of the theories in circulation, after a distributed denial-of-service (DDoS) attack disrupted legitimate access to the Telegram secure messaging app by swamping it with “garbage requests.” Pitched battles broke out in Hong Kong on Wednesday between police and protestors over proposals to allow the extradition of suspects to mainland China.

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