The present document identifies key security issues, potential security and privacy requirements and solutions with respect to network slicing Phase 3 work. Specifically,
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It studies potential security impact/requirements/solutions (e.g. Steering of Roaming) to support the HPLMN to provide a roaming UE the VPLMN slice information in a secure manner
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It studies potential security impact/requirements/solutions to support temporary slices, slice service areas mismatched with TA boundaries, and slices where S-NSSAI not available in some TAs of RA.
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It studies potential security impact/requirements/solutions to support secured NSAC procedures in the cases of NSAC for multiple service areas and network controlled UE behaviours.