I love the concept of Bitcoin. I believe the Internet will redefine currency as we know it. I hope this helps the Bitcoin community to develop a currency that's really resilient to attacks.
But, is it possible?
Yes they can if they got the private key of your wallet, everything gonna be dark for you.
Since bitcoin is become popular many network security concerns about hackers and bitcoin exchanges have raised serious concerns about storing and transaction digital money in any form. But i think it cannot be hack if we have trusted bitcoin wallet.