Today we saw traffic going from CentOS servers to a Tor exit node. This caused some raised eyebrows and led us to investigate what was going on.
In the end it turned out that this exit node also acts as a CentOS repository mirror and yum decided that is was our fastest mirror.
Now that we know it should cause no harm, I wonder if others also noticed this type of behaviour.
How should we treat this mirror? Should we blacklist all known Tor exit nodes?