Yes it is in our hand if we want our money safe . There is a lot of option to make our money safe for example the hardware wallet, it safe to put your money there at there is a lot of risks you will incounter when you are investing in bitcoin. Of course you will find ways how will u keep your money safe in investing bitcoin.
Not at all times that we can make our money in bitcoin safe because of many unpredictable happenings. Considering also the fact of those hackers who really want to stole your money. Even how much you secured it their many circumstances which you can't avoid.