bitcoin is already counting years and i think as long as you are careful with your wallets then your account is secure. never tell someone your private key or place where it can be easily noticed. use wallet that are commonly used by most of the users like myetherwallet. the security of your bitcoin depends on you
this is really true that we all know and we are may be able to see for that the security of bitcoin are depends on you how are you as a person been secure even your account here in this currency we all know that not just your wallet you have to secure for.