Why SIM Swapping Remains a Blind Spot for Enterprise Security Teams

SIM swap attacks transfer a victim's phone number at the carrier level without necessarily compromising the device, enabling interception of SMS/voice MFA, account recovery codes, and help-desk workflows. The report explains why device-focused controls, SMS heartbeat checks, and user self-reporting are insufficient, and advocates for carrier-confirmed detection; iVerify's solution uses passive OS telephony telemetry to detect patterns and queries carriers to validate SIM-to-IMSI changes, producing higher-confidence alerts for security teams.