XDR No, we’re not gaslighting you. We have another detection and response term. The “X” in XDR conveys the concept of threat detection and response across multiple security controls – considering both endpoint and network activity. Yes, endpoint and network threat detection and response is a natural evolution, or perhaps convergence, of several solutions, primarily SIEM and EPP. You may begin to see more buzz around XDR, but in reality, it’s a useful term to denote that a solution is capable of aggregating and correlating telemetry from many security controls to more holistically defend the IT infrastructure. Just remember that this term alone does not encapsulate which specific controls are included. Nor does it imply that the solution is managed by a Security Operations Center (SOC) team.