pls give your valuable opinion.
What do you mean particularly? If what you mean is the main codes of Bitcoin, I don't know much about it nor its possibility of being hacked. But so far, I have only read hacking jobs that went successful in the Ethereum wallets. Hacks in Parity, myetherwallet, Mist, and other Ethereum wallets are well-known. There are also hacks done with Bitcoin wallet accounts but these are usually individual cases.