Explanation:

“XcodeGhost” is a malware, which is claimed for injecting malware into several iPhone and iPad apps that were subsequently uploaded to the App Store.
It was originally found in 2015. Recently, more than 128 million iOS users were allegedly affected by the “XcodeGhost” malware. 55 per cent of the affected users are in Chine while 18 million of them are in the U.S.