That image is so unnecessary, BBC.
A fitness company, Strava, for some reason has its "members" (very rude, BBC) fitted with GPS tracking tech. They then published worldwide maps showing people who were exercising. The practice facilities of the Cleveland "Cavaliers" were, of course, dark, but there were clear exercise hotspots elsewhere. Beeb, explain:
a large number of military personnel on active service had been publicly sharing their location data and realised that the highlighting of such exercises as regular jogging routes could be dangerous..."You can establish a pattern of life."...in this case highlighting the location of formerly secret bases or undisclosed patterns of military activity.
Nick Waters
@N_Waters89
Big OPSEC and PERSEC fail. Patrol routes, isolated patrol bases, lots of stuff that could be turned into actionable intelligence.
Swiveling hips sink ships. It's embarrassing.
