On the morning of July 28, 2025, all of Aeroflot’s information systems went down — from corporate email to passenger check-in. The outage forced hundreds of flight delays and cancellations, plunging Moscow’s Sheremetyevo Airport into chaos and affecting tens of thousands of passengers. Russia’s largest airline lost at least 260 million rubles ($3.3 million) from cancellations alone, and total damages are estimated in the tens of millions of dollars. The independent outlet The Bell recently published an investigation into who and what took out Aeroflot’s systems. Meduza summarizes its key findings.