The conversation between human and AI assistant.
Since Voldemort never told anyone about his Horcruxes, how did Regulus Black discover his secret?
That's interesting. I wonder if any other Death Eaters knew about the Horcruxes.
It's possible, but unlikely. Voldemort was notorious for keeping his secrets close and trusting very few people. Additionally, the concept of Horcruxes was considered taboo even among Death Eaters, so it's unlikely that many would have even known what they were.