since there is so many people using it, what prevents developers

>>59854791
too many nerds use it as in unless it's something really really really sneaky it's gonna be seen after a day after it's been inserted

>>59854791
They have a decent size team + maintainers for hundreds of devices with eyes on it.

Nothing.
If you are this paranoid I suggest you stop breathing, someone might be poisoning it.

Honestly? Nothing. Stop with your retarded open sores meme. Literally no one will bother to read through all the code to make sure there's nothing malicious.

>>59855036
CyanogenMod is the base for nearly all custom roms, if there's anything Android that's extremely well documented it's that.

I have lineage OS on my Nexus 4, it's a popular phone so I think it's secure.
I have nothing to hide on my phone anyway (no credit card).