"With the influx of new users who aren't necessarily crypto savvy we have noticed many members are not being safe with their keys so we created this handy little guide to keep your account super safe. The Steemit password system is tiered so you should be using certain keys for certain things for maximum safety."
https://steemit.com/steemit/@minnowsupport/steemit-passwords-the-ultimate-guide-to-key-safety