Yes;Bitcoin is really secured.The security syestem of bitcoin account is great.If you can submit your bitcoin in your coinbase account it is totally secured.
Hackers would be able to access your access depending upon your level of protection on your computer make sure your password is not easily accessible and would be changed from time to time. Also when using bitcoin make sure you are not accessing any harmful site in order to prevent access by hackers. Also, I think bitcoin would not be ban by government easily because you are not handling any dangerous activities here.