Exactly same with link you share. Here's similar topic which mention
k value,
https://bitcoin.stackexchange.com/q/35848Then don't worry. Last month I've checked all of bitcoin addresses for this and found like 1000 addresses with this vulnerability and only 3 with balances. All 3 <500 sats. So, you won't find anything new...
I know, it's just problem with the implementation, not the cryptography itself.
a lot of people know how to from this article already 9a lot of people copy article it can found on google search multiple blog)
check sample transaction have r s z value, all zero balance already
Unfortunately all address list on puzzle can not find z value or have only 1 z value, not enough to useful
still very hard to calculate with that method
however good article and knowledge