Keys & Permissions
Any password or key is more likely to get compromised the more it is used. That's why Steem uses a hierarchical key system to keep you safe. You are issued with Steem keys which have different permissions. For example, the Posting Key (which is intended to be used frequently) has a limited set of permissions for social actions that require less security. You'll need to be more careful with your Active Key since it has permissions to perform wallet related actions.
Please take note of your Steem Keys listed below. Ideally, use a Password Manager (like 1Password or LastPass) or store an offline copy safely (on a piece of paper or on a file on a USB drive).
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Understanding Private Keys Part 1Posting Key
This key should be used for social networking actions, like posting, commenting and voting. This key has a limited set of permissions and it is not able to be used for monetary actions. So you can't lose money if someone else gets access to this key.
Use this key to log in to other Steem-powered social networks like Steemit, Busy and eSteem. Store this key safely.