tablet 
lmao a friends printer seems to have weaseled its way to the internet (probably using UPnP) and is old and doesn't know what to do with the data it's being sent so it just prints the data to pages ... printers gotta print ig 
Bert Driehuis@thermia the attack is specific in using 192.168.1.129, so UPnP would not be my first suspect. Someone or something on the local net appears to be treating your friend to a free security scan. It looks like it's targeting IoT, so it may be one of Mirai's successors at play.