This is like when I got the helpful notification saying that my exit
relay was running Windows XP and I ought to upgrade it. You can, if
you feel like it, write back explaining that your exit node happens to
have been used to forward traffic on behalf of a computer that happens
to be infected with
Hello fellow relay operators,
I have received word from my ISP that they detected malicious traffic
from my account. I'm running the exit node "cave" with reduced exit policy,
https://atlas.torproject.org/#details/3875c9c843d33762fa733bcaf128f26a10bc75e7
The information received from my ISP