GitLab

In #15515 (moved) we blocked HS DoS attacks by having IPs block multiple INTRODUCE1 cells on the same circuit. When the IP blocks an attack, it issues this log message:

    log_fn(LOG_PROTOCOL_WARN, LD_REND,
           "Blocking multiple introductions on the same circuit. "
           "Someone might be trying to attack a hidden service through "
           "this relay.");

You might notice it's in warn because we actually didn't think anyone was using this attack.

Unfortunately, it seems like someone was actually using it, so a few people have encountered this message on their relays and it left them puzzled. I think the word "attack" makes this more mysterious than it deserves. Also, since there is no action for the user to do, maybe this log message can be silenced completely (toned down to info or something).