Di5Guise: 5G Privacy with vSIM#

Authors: Shirin Ebadi (University of Colorado Boulder), Zach Moolman (University of Colorado Boulder), Tamara Lehman (University of Colorado Boulder), Eric Keller (University of Colorado Boulder)

• Why: This hits both halves of your identity/networking background at once: 5G subscriber identity (SUPI/SUCI, IMSI-catcher history) and network function virtualization — Eric Keller's presence signals an SDN/NFV systems approach rather than pure crypto theory.
• What: Apparently the use of virtualized SIMs (vSIM) — decoupling subscriber credentials from a physical SIM/eSIM — to improve subscriber privacy in 5G, presumably by making identity easier to rotate or compartmentalize per device/service (title/author line only — no abstract in program).
• How: Not described in the program; plausibly per-context virtual identities provisioned on demand so that long-term subscriber identifiers are never exposed on the radio or core interfaces.
• Where applicable: 5G core and RAN ecosystems, MVNOs, and eSIM/iSIM device fleets. Realistically operator-dependent: requires core-network support for virtualized credentials, so nearer-term for private 5G or MVNO deployments than for consumer carriers.