I am very interested to know if cryptocurrency wallets like Bitcoin Core, NEON, Electrum can ever be hacked ?
PRofessional hackers? I don't think so if they don't have the private keys that are really needed when opening an account, but there is also some crypto wallets that don't have private keys, maybe that are the wallets that can be hacked by hackers. As long as you know how to protect your private keys then we should not be going to worry about hacking our wallet.