A method for monitoring endpoint devices affiliated with a computer network includes: for each security technology, accessing a set of objects generated by the security technology during a time interval and representing characteristics endpoint devices configured with the security technology, partitioning object groups representing individual endpoint devices, and aggregating characteristics represented in each object group into an endpoint device container associated with the security technology and containing identifying data and status data representing one endpoint device; identifying a first subset of endpoint devices configured with first and second security technologies based on correspondence between data contained endpoint device containers associated with the first and second security technologies; and identifying a second subset of endpoint devices configured with the first security technology and excluding the second security technology based on absence of correspondence between data contained in endpoint device containers associated with the first and second security technologies.