Yesterday I updated my debian server using:
apt-get update && apt-get upgrade
I received message that some of the packages cannot be authenticated being in a rush I hit yes to install anyway. Now thinking back was a bad decision, what if someone was doing MITM and installed a backdoor on my server?, after all debian does not use SSL for it's repository.
How can I view witch packages were installed unauthenticated ? I can't remember. Also what you recommend in this case