Despite the application of increasingly advanced methods and technologies to automate tasks within cyber security, human domain knowledge remains indispensable. Especially monitoring a system’s security posture as well as detecting and analyzing cyber threats requires involvement of security experts. However, the large amount of data relevant for these tasks poses a major impediment for any kind of manual analyses. It is therefore necessary, to enable security experts to efficiently deal with large amounts of data. Visual Security Analytics (VSA) aims to achieve this through generating interactive visual representations of log data or any other data relevant for monitoring, ensuring, and preserving cyber security and covering different ways of analyzing security data using visual approaches (Marty 2009). It is a combination of automated and visual analysis aiming for a “best-of-both” worlds approach. Thus, VSA is a highly interdisciplinary field covering information security, security analytics, information visualization, and human-computer interaction among several others.