Why no one can track down the hackers who stole around $500million worth of NEM from japanese exchange. how do you keep your cryptocurrency?
Cryptocurrency is safe, and what makes it so is the ability for addresses to change after very transaction, and also you are able to store you balance offline on a hardware wallet to avoid the online ones, online wallets have a 2FA which sends you a verification SMS containing a password each time you or somone logs in from a different IP to your wallet, and if you are keeping your crypto offline than the only way a person could hack you is by sending a virus or a keyloger to your computer.
It turns out, if a virus got to the computer and hackers hacked with it my account and brought tokens, then I can not do anything?
How then to secure yourself?
Never leave any significant amount of crypto currency on an exchange. Especially if they aren't ensured. If they get hacked or steal your coins and claim they are hacked you lose. As soon as you make the trade get your coins off the exchange . Keep your coins in a hardware wallet like Trezor for example.