Apple, at least, claims they do[1]: "As a matter of practice, before servers are put into production at Apple they are inspected for security vulnerabilities an

Apple, at least, claims they do[1]: "As a matter of practice, before servers are put into production at Apple they are inspected for security vulnerabilities and we update all firmware and software with the latest protections." [1] https://www.apple.com/au/newsroom/2018/10/what-businessweek-got-wrong-about-apple/ https://www.apple.com/au/newsroom/2018/10/what-businessweek-...