the quality or state of being secured means freedom from danger (safety) freedom from fear or anxiety. At this point, basic security on steemit refers to how you can protect your steemit account so that it's safe and

posting key is use to publish a post or comment, edit post or comment, upvote or downvote, resteem content, follow people, mute account. It's use to log into your steemit account more often.

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