Bohemia Interactive has decided to remove Redshell plugin from the game. Data gathered for two purposes only: to evaluate if/to what degree some of our marketing campaigns work or to get data on how the game is played and how it can be improved. When you run the game for the first time some data (anonymous statical data) will be sent even before you’ll get the chance to turn this off. If for some of you this is unacceptable we’ll be sorry to see you go but refunding the game will probably be the right choice for you.”]
Source: https://steamcommunity.com/app/298610/discussions/0/1499000547474366484/