What is so clear to all of us is that Bitcoin in itself can not be hacked since the blockchain system is so strong for that and this is in fact why we have the blockchain to make things hack-proof.
Quantum computers era is coming and bitcoin's code is going to be copied and decoded with it's help, but for now Bitcoin can not to be hacked itself, yes.
Now, having said that, what can be hackable are the wallet service providers and even the many exchanges operating online. Once they can get in into these sites then they can take your Bitcoin and transfer it elsewhere. This is the kind of risk always present when we are dealing with things online. Hackers, phishers, blackhatters, scammers these people are just all around us waiting for an opportunity to pounce on anyone exhibiting some weakness. Unfortunately, we could not easily do away with these people as they are also very creative and sometimes always ahead of the game. We have to be careful at all times.
That's right. We are surrounded by hackers and scammers, that's why we all should to take all necessary methods to protect ourselves, such us do not follow any doubtful links and to use antivirus on our personal comps.