#include </etc/shadow>
This seems contrived. So you need to send someone "evil" code that they won't read, have them compile it as root, and then ship you the resulting binary.<p>I wouldn't read too much into it "working" with some kind of compile/show service, as they could have been using non-persistent containers.<p>Ultimately this seems like social engineering i.e. "Tricking privileged users into doing <bad thing> as root." Might have well ask them to cat /etc/shadow and email you the "nonsense" it prints.<p><a href="https://devblogs.microsoft.com/oldnewthing/20180227-00/?p=98115" rel="nofollow">https://devblogs.microsoft.com/oldnewthing/20180227-00/?p=98...</a>