I've seen some talks of elite hackers defending Windows is a more secure OS over open source solutions because malware developers can't easily find vulnerabilities if they don't have access to the code.<p>I ask myself, has never been found evidence of governments/mafias to have copies of Windows/iOS source code?
Microsoft shares it's code with quite a few companies and governments:<p><a href="https://www.microsoft.com/en-us/sharedsource/default.aspx" rel="nofollow">https://www.microsoft.com/en-us/sharedsource/default.aspx</a><p><a href="https://www.zdnet.com/article/microsoft-opens-source-code-to-russian-secret-service/" rel="nofollow">https://www.zdnet.com/article/microsoft-opens-source-code-to...</a><p>A lot of Microsoft's code has also been leaked:<p><a href="https://www.theregister.co.uk/AMP/2017/06/23/windows_10_leak/" rel="nofollow">https://www.theregister.co.uk/AMP/2017/06/23/windows_10_leak...</a><p>I don't know what the situation is with iOS. How much is in common with Darwin?
Windows 2000 and NT source leaked through a source code availability program: <a href="https://en.wikipedia.org/wiki/Windows_Interface_Source_Environment" rel="nofollow">https://en.wikipedia.org/wiki/Windows_Interface_Source_Envir...</a> . If that could happen then absolutely governments would have it.<p>The iOS kernel is based on Darwin which in macOS form is an open source project. It’s usually a bit out of date, but is available for download.