Reused Phone Numbers Pose Risks in CIAM Systems

CIAM Weekly examines the challenges of reassigning phone numbers in identity platforms. Reused numbers can be linked to previous accounts, creating authentication gaps. Attackers may exploit stale associations to gain unauthorized access. The article outlines how verification flows can be compromised. Recommendations include implementing number‑age checks and user notifications. Providers are urged to adopt stricter recycling policies. The analysis warns that neglecting these measures can erode user trust. Organizations are advised to audit their phone‑number handling procedures.