Editing Chapter 6: Edge Security and Privacy (section)

==='''Trust Management in Dynamic and Unstable Topologies'''===

Edge environments are inherently dynamic. Devices frequently join or leave the network, creating discontinuities in the chain of trust.

'''Problematic Assumption''': Conventional security models assume static device identity and pre-established trust channels, which do not scale to highly mobile or intermittently connected edge nodes.

'''Emerging Solutions''': Research in self-sovereign identity (SSI) and distributed ledger technologies offer promise, but current solutions suffer from scalability issues and latency concerns.

'''Case Study''': The Egyptian Smart City Pilot attempted to use blockchain to verify edge node firmware, but trust propagation across newly added sensors failed under high churn conditions, causing delays in policy enforcement.