There was something similar with popular irc clients on windows in the late 90s early 2000s. There was a direct file transfer mechanism called dcc. If you forge

There was something similar with popular irc clients on windows in the late 90s early 2000s. There was a direct file transfer mechanism called dcc. If you forged a request for con/aux device files you could send instructions to the person's printer or modem and do all sorts of interesting mischief.