Matas Kulkovas, a brilliant engineer, has developed an open-source security chaos engineering tool called Kirvis for Kubernetes, which helps handle security uncertainties at the cluster level by simulating various types of threats and testing how the system responds to them. The approach is based on a circular sequence of actions that involve hypothesizing how the system will behave under a given threat, inserting a security error, and verifying whether the system behaves as expected. Kirvis is the first SCE tool for Kubernetes and provides a more realistic understanding of how well certain practices perform under specific conditions, enabling continuous recalibration of security activities.