The optimal dimension of the avatar on Telegram is 512px by 512px, and it’s recommended to use PNG format to deliver an unpixelated avatar. According to media reports, the privacy watchdog was considering “blacklisting” some online platforms that have repeatedly posted doxxing information, with sources saying most messages were shared on Telegram. Those being doxxed include outgoing Chief Executive Carrie Lam Cheng Yuet-ngor, Chung and police assistant commissioner Joe Chan Tung, who heads police's cyber security and technology crime bureau. How to Create a Private or Public Channel on Telegram? A vandalised bank during the 2019 protest. File photo: May James/HKFP.
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