MILAN (Reuters) -Italy’s data protection authority has formally warned Chinese-owned video-sharing app TikTok about an alleged breach of existing European Union rules to safeguard user privacy, the watchdog said on Monday. TikTok had told users in recent weeks that it was going to deliver targeted advertising to them from July 13, without requesting consent for using data stored in their devices, the Italian watchdog said. In changing its privacy policy, TikTok claimed it was acting in the legitimate interests of the company and its partners, according to the Italian regulator. But the watchdo…