https://www.reuters.com/article/us-eu-antitrust-apple-exclusive/exclusive-eus-vestager-warns-apple-against-using-privacy-security-to-limit-competition-idUSKCN2E81ST >Europe's tech chief Margrethe Vestager on Friday warned iPhone maker Apple against using privacy and security concerns to fend off competition on its App Store, reasons CEO Tim Cook gave for not allowing users to install software from outside the Store.