[7] On February 4, HUR's official Telegram channel reported that they accessed an electronic document management system called "bureaucrats", and exposed detailed information about high-ranking Russian military personnel and specialists.
The hack resulted in the HUR recovering sensitive information that included Russian army orders, reports, and instructions that were circulating among over 2,000 military units within Russia's defense ministry that could be analyzed by the Armed Forces of Ukraine.
The hackers sarcastically thanked Russian Defense Minister Sergei Shoigu's inadvertent role in facilitating the cyberattack's success.
The HUR reported that the attack destroyed critical software and configuration files, leading to severe internet disruptions throughout Russia that affected major cities such as Moscow and St. Petersburg, requiring workers to physically access and re-connect equipment to fix the outages.
[13][14] On June 12, coinciding with Russia Day, Ukrainian hackers targeted the online systems of multiple Russian airports, causing flight disruptions.
Prior to the attack, cyber-specialists accessed the official website server of the Stavropol Region's State Duma, adding a banner containing the phrase "Hold on, we will liberate you!"
[15] Shortly after on June 14, the HUR cooperated with the BO Team hacker group to attack Russian municipal web resources, primarily targeting the Ulyanovsk regional administration's digital infrastructure.
The attack resulted in considerable damage to the administration's IT systems, where two hypervisors and communication devices were reportedly disabled, while ten virtual machines and one personal computer were destroyed.
Prior to the main assault, the hackers engaged in a phishing campaign that targeted other local government bodies, courts, and members of the public.
Customers of several major Russian banks were unable to withdraw cash from ATMs, with credit and debit cards being blocked upon use.