Hello!

In January I downloaded a new version of Bitcoin Core wallet from  https://bitcoincore.org/. After  waiting for almost 3 weeks to get node fully synchronised and to see the wallet's balance, I discovered that in the meantime on 11/02 all my assets that were stored in the Bitcoin Core (v0.20.1) were stolen to SegWit address bc1qz6k55y7z20azt596u80mtp0p53v9qnrj534t3k . I have never shared anything (seeds or private keys) regarding my BTC wallet address and thought that funds are save by using full node wallet.

How could this happen? What can I do, to still use this wallet to receive on it my pending mining that is still linked (and cannot be "un-linked" to the address from where the funds have been stolen?

Any suggestions would be much appreciated.