How Japan's defense bases are exposed by smartphone data

Detailed summary

Sensitive movements traced through commercially available records

Nikkei found location data at facilities belonging to Japan's Ground, Maritime and Air Self-Defense Forces. The movements of individuals could reveal patterns involving entire defense units.

TOKYO -- Location information transmitted from smartphones poses a national security threat to Japan. Data bought and sold includes records linked to people visiting government facilities, such as the prime minister's office. Nikkei analyzed data covering more than 40 million IDs linked to smartphones.

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