The scenario at hand is data leakage; accordingly the prevention strategy is by having a more secure storage system. One way of addressing that is by using a s

The scenario at hand is data leakage; accordingly the prevention strategy is by having a more secure storage system. One way of addressing that is by using a secure vault for sensitive data storage. This is beyond the skillset of most backend engineers, but new products such as Piiano may bridge the gap (proper disclosure: I'm a friend of one of the people behind Piiano)