Alphabet Inc.'s Google announced on Thursday that its YouTube streaming video service disabled 210 channels appearing to engage in a coordinated influence operation around the Hong Kong protests, days after Twitter and Facebook said they dismantled a similar campaign originating in mainland China.
"This discovery was consistent with recent observations and actions related to China announced by Facebook and Twitter," said Shane Huntley, one of Google's security leaders, in a blog post. But he stopped short of identifying the origin of the channels.
Twitter Inc. and Facebook Inc. on Monday said that channels they had removed had engaged in a state-backed effort by China to undermine the protests in Hong Kong through posts calling participants dangerous and vile extremists.