[TikTok's head of cyber-security is stepping down amid rising privacy concerns on the Chinese-owned app] Jul 15, 2022, 2:54 pm13 pts [Business Insider] [SOPA Images/Getty Images TikTok's Chief Security Officer is leaving the company. This comes amid renewed calls by the US government to look into whether TikTok poses a security risk due to its ties to China. Last month, reports that TikTok employees in China accessed US user data caused backlash from…]