1)IS there any possibility for Altcoins to be hacked ?
2) Difference Between Bitcoin and altcoin in security ? if they are same why Bitcoin price far away from other altcoin if they same ?
Absolutely it can be hacked that is why we need to protect our wallet by making it vulnerable from hackers like using 2FA applications and to provide a very strong passwords in put in the place which an 100% safe. Bitcoin is become more expensive because it will depend upon the popularity and the investors that pouring in not because of stable security application that has been used.