The CEO of TikTok dropped into a Ted Talks in Vancouver Thursday to address concerns over data security on his social media platform. Shou Zi Chew told Chris Anderson, the head of Ted Talks, that TikTok data has never been stored in China, but they have some legacy data to be deleted on their servers in the United States and Singapore. “That deletion is a very big engineering effort. So, as I said at the hearing, it’s going to take us a while to delete them, but I expect it to be done this year,” said Chew, referring to his…