The horned head resembled the tattoo that appeared on the cultivators of the Chasing Demon sect when they joined it. Yet, Noah knew that the assailant couldn't possibly be a traitor since his status as Demon Prince would prevent any member of the Hive from attacking him.
It was hard to create oaths able to restrict rank 5 cultivators, but they would be almost impossible to break once they swore them. Only a stronger existence or an inscribed item meant solely for that purpose could help in that matter.
Nevertheless, the oath of the assailant was still active and didn't react to Noah's presence, meaning that the cultivator couldn't belong to the Hive.