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Sweet QuaDreams or Nightmare before Christmas? Bill Marczak on Dissecting an iOS 0-Day

ID: b2caf0db-44cf-5ba2-bc3c-054a0e172697

STIX ID: report--b2caf0db-44cf-5ba2-bc3c-054a0e172697

Feed Name: The Citizen Lab

Threat Score
85/100

Date Published: 2025-01-09

Date Updated: 2026-04-19

Author: Snigdha Basu

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Citizen Lab and Microsoft researchers presented an analysis of Quadream's ENDOFDAYS spyware — a zero-click iPhone exploit delivered through invisible iCloud calendar invites — linking the vendor's tools to targeted surveillance of civil society members in at least five individuals across ten countries and documenting findings in the Sweet QuaDreams report.

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