Manufacturers of the Twinkly IoT-connected lights slightly boosted security by switching out the Wi-Fi module, according to Pen Test Partners. The lights allow users to, via smartphone, control the lights remotely, synchronize them with music, apply templates for light designs and patterns, draw and customize their own patterns, and so on. The new version of the lights released for the 2019 holiday season is a bit safer than it used to be, researchers found. The manufacturer was inspired to make the change because of an action by a retailer stocking the lights during the 2018 season.
Source: https://threatpost.com/smart-christmas-lights-safer-last-year/151057/