What is the best methods to protect altcoin from hacker?
Anything on the web are vulnerable on hackers attack. This includes tokens and coins in our online wallets. But to get rid of it take some safety measures for yourself, first, dont ever entertain any email that contains links that maybe a phising site and also never ever let your private key known by other users or leave it unattended ( posting it in any thread or put it in wallet address box).
What do you mean how to protect? To secure your altcoin? It is very simple for me. Just secure the password of your wallet because it is very important on how to access your altcoins. Not by password also be responsible on what you are doing online be active to avoid scams online. There are so many phishing site that can actually hack you data.