It is not a new scam method in the community but it has been happening continuously and many still becomes a victim of it.
How to protect yourself from such an attack includes
1. Keeping your funds in an uncompromised personal, custodial or hard wallet.
Not custodial but non custodial wallets. Because if you say custodial, those are the wallets where you don't have any control. Just like the exchanges and any other wallets online where you are not given the private keys.