Yes ,cryptocurrency wallets can be hacked even the almighty etheruem wallet/website get hacked all the time.
The easiest way to get hacked is clicking on every link that comes your way.
We need to be very cautious of our wallets so as to avoid being hacked.
hackers now are very smart, they can developt their technique to attack site security.even we have multy layer security, they still able to break and steal our balance.
No one is safe from the internet, especially if you are a well known person or you are involve in a money trading investment. People will always find a way to know or steal some information regarding on what or who you are, for them to use it against you. E-wallet is not safe from people who are like that, especially if it is lacking of security. Unlike physical wallets, e-wallets are not tangible, simply, they're digitized. In order to access them, you must access it through digital or simply with the use of computer. Computers of today are very prone to hackers, especially if it is lacking of security. So be aware of the sites you are accessing, you might dive in a trap that will cause you everything.
As long as you use the genuine wallets then you will never see any trouble in your life regarding this issue of hacking or being hacked. You should always remember that you have to keep your privacy secure as you are in precious source and your coins will be safer as long as you do not share your password or other information related to your wallet. On the other hand if you become careless in handling your wallet then you should not enter in the circle of precious investments.