How Ukraine Hacked Gazprom: Inside the Cyberattack on Russia’s Energy Giant Fueling the War

gazprom-ukraine

In the early hours of July 17, 2025 at 02:00 Moscow time, IT engineers across Russia’s largest energy company, Gazprom, found themselves locked out of critical systems. Internal platforms failed to load. Servers refused to boot. Entire regional subsidiaries—nearly 400 in total—were digitally paralyzed.

This was no routine outage. It was, according to Ukraine’s military intelligence agency (HUR), a precision cyberattack months in the making.


Thousands of Accounts Locked, Hundreds of Subsidiaries Crippled

The attackers moved fast. Roughly 20,000 employee accounts were disabled in a coordinated strike, shutting out IT staff as malicious code triggered data-wiping malware across Gazprom’s infrastructure.

Entire fleets of servers—many running Russia’s staple accounting platform, 1C, as well as gas pipeline telemetry software—were rendered useless. Even BIOS firmware on hardware was overwritten, making the machines unbootable. Any backup data, local or in cloud storage, was reportedly systematically erased.


The Data Grab Before the Detonation

Before launching the wipe, the Ukrainian team claims it exfiltrated hundreds of terabytes of sensitive files. Among them: gas flow schedules, contract databases, and at least 20,000 digital identity certificates used to sign legally binding documents.

Ukraine says this treasure trove could uncover sanctions violations, war financing schemes, and battlefield logistics funneled through Gazprom’s opaque budget.


The Potential Fallout: From Pipelines to Markets

Cyber analysts say Gazprom may now be unable to finalize contracts, monitor gas flows, or maintain pipeline safety, especially if no secure backups remain.

Some experts suggest that the lost data could affect international supply chains, depending on how much operational control systems (like SCADA—used to control industrial processes) were affected.

Ukraine’s defense ministry estimates recovery will take months, and even then, legal and technical gaps may persist.


Gazprom’s Silence Speaks Volumes

Despite the scale of the reported damage, Gazprom has made no public statement. Russian media have not acknowledged any disruption. Screenshots and videos released by Ukraine have not been independently verified, but experts say they bear signs of genuine internal systems.


Not Ukraine’s First Cyber Operation—But Its Boldest Yet

This isn’t a one-off. In recent months, HUR has targeted other Kremlin-linked firms, including a drone supplier. These missions are part of what Ukraine calls its digital counteroffensive—an effort to weaken Russia’s wartime economy with surgical precision.

What sets this operation apart is its scope and destructiveness—a shift from earlier leak-and-disrupt tactics to full-on operational sabotage.


Echoes of Past Breaches

Hacktivist groups like Anonymous breached Gazprom Linde Engineering as early as 2022, dumping nearly 730 GB of emails. But those were largely symbolic. The 2025 Gazprom breach is a strategic strike designed to cripple core systems and collect leverage.


How Did They Get In?

Ukraine has not detailed the intrusion vector, but experts offer three likely paths:

  • A supply chain attack via compromised software updates.
  • VPN credential theft, enabling lateral movement across Gazprom’s networks.
  • A phishing campaign followed by exploitation of Microsoft Exchange vulnerabilities.

Until Gazprom or a third party provides forensics, these remain informed theories.


Energy as a Battlefield

If confirmed, this would be one of the most destructive cyberattacks ever against a state-owned energy company. It shows how digital weapons now rival missiles in reach and impact—and how energy systems are frontline targets in modern warfare.


What Happens Next

Gazprom’s technical teams are reportedly working to rebuild infrastructure. But the real threat may be what Ukraine now knows: the secrets in those terabytes of stolen data, and how they might be used—in lawsuits, sanctions enforcement, or simply as strategic blackmail.

As Kyiv sharpens its cyber arsenal, and Moscow reels in silence, one thing is clear: the age of cyberwar is not coming. It’s already here.