https://www.reuters.com/article/us-usa-tiktok-army/army-examines-tiktok-security-concerns-after-schumers-data-warning-idUSKBN1XV2N6 >The U.S. Army is undertaking a security assessment of China-owned social media platform TikTok after a Democratic lawmaker raised national security concerns over the app's handling of user data, Army Secretary Ryan McCarthy said on Thursday.