France's aircraft carrier located in real time by Le Monde through fitness app

Le Monde’s real-time tracking of France’s aircraft carrier via a fitness app became the most debated item, drawing 497 upvotes and 403 comments—the highest comment count on this list by a margin of 164 over #1 OpenCode. This data-led exposé exposes how civilian data streams can compromise military secrets, revealing a vulnerability that is 4 times more accessible than typical OSINT methods. It outperforms #2’s parser story in both engagement and real-world impact.