Attacks on business are growing steadily as data becomes more valuable and exploitable. Attacks have also become more sophisticated and targeted to become unique attacks that would not be on a security solutions database. Also, there are now attacks that take advantage of your network vulnerabilities to steal credentials and becoming undetectable to your security as well.
This is where Security solutions like Security information and event management (SIEM) User and Entity Behavior Analysis (UEBA) comes into play. With both these solutions, you will have a solution that can baseline behavior of users or servers to see if suspicious activities are happening within your infrastructure.