Yes of course your wallet can be hacked, actually there are some cases regarding that already but most of them are because of the carelessness of the owner though. Like clicking phising website, willingly input the data of the wallet to scammers, and such. Everything in the internet is vulnerable to hackers, we just need to be careful, don't believe suspicious websites or people, never give any important detail and information, keep our wallet key or password in safe place, and always be cautious. There are so many things we can do to prevent it getting hacked for sure.