itch.io

First answer: Hackers are assumed to be ghosting by default and do not need to roll to enter Ghost, only for the other actions. (It felt weird to people in testing when they did.)

Second answer: Failing Economic Shock does not increase your Burden.

hope that helps!

Short answer: because they just are. Long answer: working in increments of five and adding up to ten to it on the fly is easier than calculating from 7 from a psychological game design standpoint, and security/network level is more likely to be on the fly than a dedicated NPC or character is. The math is not fundamentally different.