title_body: Is it possible that an honest validator node gets penalised in Cardano's POS scheme? Want to understand if there can be scenarios where a stake pool gets penalised even though it does not act maliciously. If this risk exists, what are the possible cases that can lead to penalties and is there an official documentation on it?
  For example: will there be penalties if the node goes offline?
upvoted_answer: Cardano does not applies slashing (negative incentive) as it's reward scheme allow to maintain necessary security with it.
  The only penalty is the rewards the stake pool operator and its delegators has missed to obtain.