Hello,
To avoid hackers to gain access to your account and to steal your money is recommended to use the posting key to log in into Steemit.
You can find it by adding /permissions to the url of your account, for example : https://steemit.com/@najoh/permissions
In case the posting key is compromised the hacker wont have access to any of your money.
I didn't know about this not so long ago and I wish I knew this before.
Pass the word and only use the posting key unless you want to make transfers.