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Ukraine Claims Major Hack of Russian Aerospace Firm Tupolev

Ukraine Claims Major Hack of Russian Aerospace Firm Tupolev

First seen 25 Jun 2026, 01:10 UTC •

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ThreatCluster AI
ThreatCluster •June 26, 2026 at 00:13 UTC
  • •Ukraine's HUR hacked Tupolev, stealing 4.4 GB of classified data.
  • •The breach included sensitive internal communications and personal data of staff.
  • •Ukrainian operatives defaced Tupolev's website as part of the cyber operation.

Ukraine's Military Intelligence (HUR) claims to have hacked the Russian aerospace company Tupolev, stealing 4.4 gigabytes of classified data. The breach includes internal communications, personal data of employees, and procurement documents. The operation reportedly lasted a significant period, allowing for extensive data collection. Ukrainian operatives also defaced Tupolev's website, replacing its main page with an image of an owl clutching an aircraft. This attack follows previous breaches of Russian defense agencies and highlights ongoing cyber operations against Russia's military-industrial complex. The stolen data is expected to have a considerable impact on Russian strategic aviation operations. HUR has been systematically targeting Russian military entities since the escalation of the conflict in 2022.

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Timeline

2026-06-04
Breach confirmed by intelligence source
An anonymous source within HUR confirmed the breach and the extensive data collected over an extended period.
KyivPost
2026-06-25
Ukraine claims successful hack of Tupolev
HUR announced it breached Tupolev, stealing 4.4 GB of classified data, affecting strategic military operations.
BleepingComputer
2026-06-25
Tupolev's website defaced
Ukrainian hackers replaced Tupolev's website homepage with an image of an owl clutching an aircraft.
KyivPost

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