A massive cyberattack was launched against Delta, a leading Russian smart alarm system supplier for residential, commercial, and automotive use, on 26 January 2026, causing widespread operational disruptions across the country. The attack crippled Delta’s information technology systems, bringing down websites, telephony, and critical services for tens of thousands of subscribers. Delta labeled the incident a “large-scale external attack” designed to bring operations to a standstill, with no signs of customer data compromise identified at the time.
End users were immediately affected as car alarms failed to turn off, preventing unlocking and engine start functions in many cases. Home and commercial building alarm systems defaulted to emergency modes that could not be overridden by users, while range-based services like vehicle start functions malfunctioned, sometimes causing engines to shut down during use. Information from Telegram groups like Baza and other news sources, such as Kommersant, shed light on these operational issues, highlighting the weaknesses of IoT security devices connected to the internet.
Delta’s marketing director, Valery Ushkov, addressed the situation through a video message, stating that the company’s infrastruct
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