Sign-stealing via electronic (illegal) means has suddenly dominated the hot stove season, as four people who worked for the 2017 Astros, including pitcher Mike Fiers, have confirmed the team illegally stole signs in real time during home games via a camera positioned in the outfield. The Astros won the 2017 World Series.
MLB had already been investigating the Astros after an assistant general manager made comments expressing support for an alleged woman-beater to three female reporters during the postseason, and MLB is now investigating the sign-stealing allegations.
The Astros stated this week that they have "begun an investigation in cooperation" with MLB.