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WhatsApp Screen-Sharing Video Calls Used to Hijack Accounts

Recent cases across Spain, Brazil and Hong Kong highlight the scheme’s reach with reported high losses.

Overview

  • Attackers impersonate support staff, bank representatives or known contacts and push targets to share their screens during WhatsApp video calls.
  • When the SMS verification code appears on the shared display, scammers use it to register the number on another device and lock the user out.
  • ESET reports cross-border incidents, including a Hong Kong case with about $5.5 million lost and a Brazil case where a victim’s banking app was accessed.
  • Meta said it removed more than 6.8 million fraud-linked accounts in August 2025, yet new reports continue to surface, including in Argentina.
  • Security guidance stresses never sharing screens or verification codes, enabling two-step verification, reviewing linked devices, reinstalling WhatsApp to trigger a new code, and contacting support and cybercrime units if compromised.