Not 100% safe. Bitcoin is beneficial, but not a few also suffered losses when investing with Bitcoin. Because bitcoin is closely related to internet technology and internet networks it will be vulnerable to hacking. IT security is a serious problem that can be experienced by all countries, not just for Bitcoin but any industry that uses technology. So doing a simple thing as a preventive effort against hackers is something that must be done. If necessary use hardware wallet
I agree with you. Many investor want to know if their investments is safe. Because they are afraid to loss their money. So they want to make sure that their investments is safe. And they have so many options on how to secured your investment in bitcoin. They have a wallet hardware that for me is most secured.