I don't think they've ever been bypassed on custom roms that aren't based on an official rom. Basically it checks all the files in /system to ensure they match

I don't think they've ever been bypassed on custom roms that aren't based on an official rom. Basically it checks all the files in /system to ensure they match with one that's undergone certification. If you have a good rom but just rooted it, there are some tricks although I haven't tested them, but nothing has been done for cyanogenmod or anything else not based on a certified one. http://www.howtogeek.com/241012/safetynet-explained-why-android-pay-and-other-apps-dont-work-on-rooted-devices/ http://www.howtogeek.com/241012/safetynet-explained-why-andr... has an explainer, and a link to more technical information.