TechSpot: A $5 Bluetooth tracker hidden in a postcard exposed a warship’s movements. “Journalist Just Vervaart concealed a Bluetooth tracker inside a postcard. He then mailed it to the vessel using publicly available instructions from the Dutch Ministry of Defense, intended to help families send mail to loved ones stationed on the ship. This protocol provided enough details to get the tracker […]

https://rbfirehose.com/2026/04/24/techspot-a-5-bluetooth-tracker-hidden-in-a-postcard-exposed-a-warships-movements/