Modem Attack Allows for Persistent Malware

[silicon_toad2000]

At a demonstration at the DefCon security conference in Las Vegas,
researchers demonstrated how they could install malware on certain
LTE/3G modems that are built in to some laptops and tablets that would
persist even after operating system reinstalls. The problem is due to
an insecure firmware update process.
http://www.computerworld.com/article/2968274/security/internal-lte3g-modems-can-be-hacked-to-help-malware-survive-os-reinstalls.html