I'd like to know if it is possible to figure out if the USB charger of my smartphone (more info below) contains any operating system or firmware which could be infected by malware.
Let's assume I charge my smartphone with my USB charger:
- How can I figure out if there is any firmware inside of that charger which might be infected by malware?
- Could the charge be infected if I use it to charge a malicious device (e.g. an infected smartphone)?
- Could the infection spread subsequently by charging other devices?
I use the following charger:
A similar model is this one: