New systems are always interesting targets since their security model couldn’t mature yet. NoSQL databases are no exception and had some lurid articles about their security, but how does their protection actually look like? We will take a look at three widely used systems and their unique approaches: Redis: Security through obscurity or how you can rename commands MongoDB: Widely lampooned for publicly accessible databases, it actually provides an elaborate authentication and authorization system, which we will cover from a historic perspective and putting an emphasis on the current state Elasticsearch: Groovy scripting has been a major headache, but the new, custom-built scripting language Painless tries to take the pain away literally.