A sharp uptick in thefts of Hyundais and Kias over the past two years has been linked to viral videos posted to TikTok and other social media platforms that teach people how to exploit a security vulnerability to steal the cars.

A Polk County woman has joined a national class action lawsuit against Hyundai Motor America and Kia America Inc. alleging “blatant breach of public trust” led to a surge in thefts of certain Kia and Hyundai vehicles sold without an engine immobilizer.