Hacking a secure Bitcoin wallet is toughest job. Unless you holding million of dollars worth of btc in it, I don't think anybody will going to give it even a try.
Also most people wrongly use term hacking for password stealing.
Sometimes you accidentally diaclose your password through phishing or other ways and someone use your password to stole your funds. That's not hacking technically.
If someone get into your wallet by cracking your password or loopholes in system, that is hacking which is not possible with btc wallet.