Bitcoin can be safe your online wallet like blockchain or coinbase. these wallet are safe if you safely save your keypass.  or I use to cashout some of bitcoin so that the riks can be minimized. but don't store your bitcoin on any exchanger. it can make loose your coin.So far my bitcoin is currently safe even if it is stored in an online wallet like blockchain.com. The most important thing is how we secure our account through super powerful step like no one can know password and private key.