Chess.com takes cheating very seriously:
https://www.chess.com/article/view/chess-com-fair-play-and-cheat-detection
Discussions of cheating, potential cheating or cheat detection are not allowed on the general forums. If you would like to have that discussion, join the following group.
https://www.chess.com/club/cheating-forum
Apparently you can cheat in 3 minute blitz.
Not like there's a clock running or anything.
LOL