Can't speak for the person you're replying to, but I'm a security engineer and stuff still makes its way to me that you would think would get filtered out by others (and isn't my job to fix). It just takes the right person thinking "this is obviously a problem with $system, let's just send it straight over to them so they can fix it quickly!" And then we get the fun job of proving it's not us and has no relation to us.

We got a ticket today for packet loss between two systems, neither of which have any of our tools on them...