A foiled terrorist plot targeting Taylor Swift's concerts in Vienna aimed to kill 'tens of thousands' of attendees, according to CIA Deputy Director David S. Cohen. The threat, linked to ISIS, resulted in the cancellation of all three scheduled shows, which were expected to draw around 200,000 fans. Austrian authorities arrested three suspects, including a 19-year-old Austrian who confessed to planning an attack using explosives and knives. Cohen noted that intelligence shared by the CIA helped facilitate these arrests, although details on how the CIA obtained the information were not disclosed. Swift expressed her devastation over the cancellations and gratitude for the authorities' efforts, highlighting the importance of prioritizing safety over events. The plot reflects rising concerns about security at large-scale public gatherings, particularly amidst high-profile tours like Swift's Eras Tour.