I just want to know how those people behind bitcoin secure the money they will invest because as far as I know there are lots of hackers all over the world.
The word "safety" in this market is just so not often used. The market is as risky as you can get, and so, it's just too hard for an average investors, or even starting up venturing person to keep his hopes up. If you are not serious in this market, you could really feel how difficult it really is to penetrate the market because it seems as though all ventures are destined to go down south. On the other hand, if you fear hackers, that should always be considered since cryptocurrency deals are so heavily inclined to the use of the internet, therefore, you should really protect your holdings at all cost.
If a person is careless then his/her investment will be easily get hacked by those sneaky hackers all over the world. We all know that knowledge is power and without knowledge we know nothing, The best way to keep safe your hard earned money (invested in crypto currencies if it is) is to keep it on a cold wallet or an offline computer, this will prevent hackers from entering your device. It also helps if you get a lot of knowledge on what you are doing and what you'll be doing. (paper wallets are also good for safety purposes) 