Russian Military-Linked Hackers Claim Responsibility for Ukrainian Telecom Cyberattack

The hacker group Sandworm, linked to Russia's GRU military intelligence agency, has claimed credit for a cyberattack on Kyivstar, one of Ukraine's largest mobile and internet providers. The attack resulted in essential services being blocked and limited access to the company's infrastructure. While the Ukrainian government and cybersecurity experts have not publicly attributed the attack to Sandworm, a group called Solntsepek, believed to be a front for Sandworm, claimed responsibility in a Telegram post. The attack on Kyivstar is seen as one of the most disruptive cyberattacks in Ukraine since Russia's invasion in 2022, with potential implications for intelligence-gathering, military communications, and civilian alerts.