(I posted this video earlier but never provided a link to it from the video blog)

One of Edward Snowden's leaks describes a system called XKeyScore (yes... I've transposed the name in the video). While the exact nature of the XKeyScore program is still a mystery, some of the slides published so far appear eerily similar to my Network Radar system from a decade earlier. This video tries to shine a light on what XKeyScore may be doing and why by comparing it to my earlier Network Radar system.