Groupize, a Boston-based hotel-booking company, misconfigured one of its S3 buckets as “public” This is a stark reminder that, with enough work, system administrators can make even relatively safe systems vulnerable. Encrypting everything would make the information in public buckets far less valuable to thieves and vandals. Two sets of eyes, two (or more) checks on a configuration list, two stages of verification and testing can play a role in defeating configuration errors.”]
Source: https://www.darkreading.com/cloud-security/amazon-s3-errors-hit-home-again/a/d-id/735612