title: How to secure username, password, api_keys
body: <p>We are building a rails application backed by mysql which will store sensitive information such as username, password, api_key which are specific to each logged in user. </p>
  
  <p>Is there a gem which will allow protection of such production data against stealing by internal team members or external folks.</p>
  
  <p>We don't want sensitive information to be printed in logs
  We should be able to prevent reverse engineering the sensitive data in case the data is stolen.</p>
  
  <p>How should we design the system to avoid the above scenarios.</p>