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.