Quote from: Zaguru12 on Today at 02:26:38 PM

This is what transactional replacement mean. This process can be done using either of the two bumping feature; RBF or CPFP.

With using RBF feature, you can replace a transaction with a new one paying higher fee. But in CPFP, you make a new transaction spending the fund received in the unconfirmed transaction.
In CPFP method, you don't make any replacement.

Quote from: Zaguru12 on Today at 02:26:38 PM

The series of replacement looks like it is a hack attempt on that wallet.

Maybe, the private key had been compromised and there were some people competing to steal the fund.
But if I had the private key of someone's address and I wanted to still the fund, I would make a non-RBF transaction.