Master Key Vulnerability in Bankrupt E-Scooter Startup Äike

An Estonian e-scooter owner reverse-engineered his locked scooter after the manufacturer Äike went bankrupt. He discovered a master key that can unlock every scooter sold by the company, which relied on app-controlled access through backend servers. This vulnerability affects all users of Äike's scooters, as the key undermines the security of the entire fleet.