at least bitcoin is safer than real money, because bitcoin is in a digital system that risk less loss, maybe bitcoin is not safe if there is a hacker who picks it up
Security is in you, that's bicoin. you can take care of it then you can also give a chance to the thief to take your bitcoin.
All you have to do is secure the wallet and invest properly and reliably. suppose trade in a large and very secure exchange. it is a way to secure your assets.