What is the safest way to log MEW among of these?
1.Keystone File
2.Private Key
3.Connecting Metamask.
Using 3 options above, using keystroke / Json File and private keys. If you want access via addons use metamask. What to watch for MEW is
1. Bookmark MyEtherWallet website
2. Do not share private keys
3. Do not store private keys, Json files etc in other emails. 4. Do not click on links that are not clearly emailed or website.