Bankrupt scooter startup left one private key to rule them all

An Estonian researcher reverse-engineered Äike e-scooters and discovered all units shipped with the same default private key for Bluetooth authentication; using that key he could locally unlock any affected scooter within range. Because the manufacturer is bankrupt and cloud services are unreliable or unavailable, owners cannot rely on vendor fixes — illustrating a common IoT failure in key management that enables unauthorized access and potential theft.