Can headphones transmit malware? My friend borrowed my headphones (a pair of Apple EarPods) and plugged them into his Android mobile phone for a few minutes in order to listen to a voice message. Would it be dangerous if I plug it into my phone afterwards (since I wonder whether the headphone can store malware which would eventually go into my phone)? Would it be possible to "factory reset" my headphone (just like doing so in iOS)?
I doubt there is a way to store any information (thus transfer information) on regular headphones. Some more advanced models (such as noise canceling) have some processing ability and firmware, but I don't see it as a viable attack vector.