Unfortunately, in fact, it can be, it can be hacked. I am not spreading the FUD, but hacking is very usual moreover in online.
However, there are also some triggers why our wallet may be hacked by somebody and our assets are lost.
Some may be:
- Exchanges hacked, these several times happen and saving Bitcoin in an exchange wallet is very risky, moreover if it is for long term.
- Saving on an online wallet
- Or saving on a hardware wallet but somebody may know the keys.
That si why always secure and also private our data for the wallet