What is the safest way to log MEW among of these?
1.Keystone File
2.Private Key
3.Connecting Metamask.
connecting with metamask is the most appropriate way
always be careful if you login using private key, because the security layer of the private key is less satisfactory
while metamask, can minimize hacking activity through private key
it will be better to conneting on Metamask than login using the private key.
and be careful to access at MEW because any phising site.