Is it safe to keep all of my assets in Bitcoins? And how Department for Combating Economic Crimes, can affect my account? What permissions they need , to freeze all my money ?
I'm not sure what you mean by "safe" , If you mean storing so no one really finds out about them then yes most likely you can do that . But if you mean selling all and buy BTC instead then... no one can be sure about that , price can decrease with time and can increase .. It all depends on many factors such Miners wanting to continue mining (If they see profit) , Supply-demand etc ...
Bitcoin cannot be frozen , and if you hide them I don't see how they will find out about them honestly .
I think bitcoin is safe to save all your invest,what ever we think about it that is not a problem , probably it is going to be more value able than what is the rate now, so we are safe for loosing any of our investment to bitcoin.