Hackers Breach Russian Glaz/Groza Combat Control System

Logo of the Ukrainian military website MIL.IN.UA featuring the word 'МІЛІТАРНИЙ' in Ukrainian.

17 June 2026

Two hands interact with a tablet and a drone remote control displaying a map interface.
Russian cadets of the artillery academy work with the Glaz/Groza control system, December 2024. Photo credits: Zvezda TV channel

Hackers have breached the Russian Glaz/Groza combat control system and gained access to its data.

The “Where is Russia today” community reported that they also obtained instructions, videos, patents, and other materials related to the system.

Groza is one of Russia’s primary apps for targeting and command-and-control of troops.

Its main purpose is to simplify interaction between reconnaissance drones using the Glaz software, commanders, and fire units on the ground. The system is designed to reduce the time required for target identification and engagement within the reconnaissance-to-fire chain.

Three-panel display showcasing different roles in drone operation: 'Drone Operator', 'Drone Operator Assistant', and 'Calculation Commander'. Each panel includes a title and a screenshot of corresponding software interfaces.

The operating principle of the Russian Glaz/Groza combat control system. Screenshot: @WhereisRussia

As it turned out, the system is administered through Telegram groups, where administrators provide support to users and distribute new versions of the application to Russian military personnel.

Maps in Groza allow users to plot positions of friendly and enemy forces to guide operations and improve situational awareness.

Screenshot of a messaging application displaying maps with highlighted regions and text messages related to polygons.
Complaints from Russian military personnel about the breach of the Glaz/Groza system. Screenshot: @WhereisRussia
A screenshot of a chat application displaying a discussion about a potential software breach, including a map with highlighted areas in blue and yellow.
Complaints from Russian military personnel about the breach of the Glaz/Groza system. Screenshot: @WhereisRussia
Screenshot of a chat conversation discussing map navigation and polygon management, featuring a map with colored regions and annotations.
Complaints from Russian military personnel about the breach of the Glaz/Groza system. Screenshot: @WhereisRussia

After the breach, hackers replaced part of the cartographic data with images of the Ukrainian flag and various inscriptions.

“Numerous complaints from users about the breach have been recorded: they cannot connect to the application, are unable to remove images that keep reappearing, and administrators are trying to fix the problem,” Where is Russia today reported.

Instructions for the system were also found during the investigation, including hundreds of pages of full user guides for the application.

In addition, the team discovered a training video demonstrating the system in real time.

A patent for Groza was also found, detailing the system’s operating principles, user base, and other systems it interacts with.

Patent for the Russian Glaz/Groza combat control system. Screenshot: @WhereisRussia

The patent indicates that the application belongs to the Russian company Media Effect.

2 comments

  1. Good job, Ukraine. I’m sure they’ve already squeezed as much as possible out of this before making it public.

  2. “Maps in Groza allow users to plot positions of friendly … forces”

    Sounds like Ukraine could use that for targeting.

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