# Cydia Substrate ## Identification A runtime extension framework foundational to many jailbreak tweaks and process hooks. ## Notebook evidence - [[Scanned_20260730-1946|Scanned_20260730-1946]], PDF page 18. ## Relationships and evidentiary boundary [[Cycript]] · [[SSL Kill Switch 2]] · [[Xposed Framework]]. The tool or name is preserved as research context. Written proximity does not by itself prove installation, execution, authorization, compromise, ownership, or coordination; dual-use tools require lawful, scoped testing and reproducible evidence.