Android System Used 2 Gigs of data in 3 hours

[DFWdude]

Hi Everyone, I have a concerning issue.
This morning, I plugged my Nexus 4 into my wall charger and came back within a few hours to find it completely discharged (??) and extremely hot to the touch.
After reconnecting the charger and letting it charge up again (it got cooler), I powered it on and discovered this:

"Android System" used 2.03 GIGABYTES of data within the last few hours... This is extremely concerning to me and I fear my phone has been compromised. It is rooted, I have avast antivirus and I only install apps from the Google play store. What can I do to get to the bottom of this?
I'm running cyanogenmod 11 m7.

 

[belodion]

A familiar problem for several users of late. Check these threads in this forum:

Is Android System making my Nexus 4 battery drain?

LG G2 huge battery drain of late.

They shouldn't be too far down, or you can enter them as searches to bring them up quickly.

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