Ukrainian authorities revealed that Russia-linked APT Sandworm had been inside telecom giant Kyivstar at least since May 2023. Russia-linked APT group Sandworm was inside Ukrainian telecoms giant Kyivstar from at least May 2023, the head of Ukraine’s Security Service of Ukraine’s (SBU) told Reuters. “This attack is a big message, a big warning, not only to … Continue reading Russia-linked APT Sandworm was inside Ukraine telecoms giant Kyivstar for months