As adoption of Big Data platforms grows, exposure to risk also increases without proper mitigation. For example, in 2017 alone, over 5 PB of Hadoop and NoSQL data were compromised by Ransomware attacks. And even more damage came from malicious deletion of data by an administrator or accidental mass deletion by an application bug. Detecting those events as early as possible is challenging but an absolute necessity. Not doing so can cripple an organization.