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EDR, XDR, and MDR are acronyms that are well known to most organizations. The operative letters here are DR which stands for Detection and Response. The E, X, and M stand for Endpoint, E(x)tended, and Managed respectively. Each one of these is designed to monitor a device for threats and respond according to the profile/configuration/policy enabled for the device. This is different than the traditional “anti-virus/anti-malware” application in many ways. The most common is that an EDR is intended to do more than check files against a signature list and quarantine them if identified. The modern EDR does look for malware, but it also monitors script execution, process starts/stops, file and registry reads and writes and, in many cases, network activity that can indicate potential compromise.