A friend just lost 5ETH and some tokens from his wallet. He has never copied his private key before neither has he shared his keystore file. Is it possible to lose your tokens to a hacker without having to get hold of your private key and keystore file?
Indeed we must be careful with our private key, because if we lose the wallet token asset, coins etc, will be lost useless nobody will have if our private key is lost, just hakerlah / computer information technology experts or so that can restore the wallet we.
If I lose I will see the right to be able to return the wallet even though we divide half of the wallet I will do rather than lose it completely.
I hope this helps.