If the private keys of someone with the extreme privacy focus you have can be hacked easily then nostr is dead. I'm enclined to believe it because the post was a huge block of text with no paragraph breaks and thats not how you write from what I have seen. Still, if you were really hacked, we are all wasting our time with nostr. We shoud just sell all our boxes and take up surfing.
It turns out it was my little sister posting bad stuff while I was using the toilet! All good!