TA446

TA446, also known as the Callisto APT group, Seaborgium, Star Blizzard, ColdRiver, TAG-53, and BlueCharlie, is a threat actor that has been active since at least 2015. This cyberespionage entity has persistently targeted individuals and organizations involved in international affairs, defense, and logistics support to Ukraine. Their targets predominantly include government officials, military personnel, journalists, and think tanks. The group's activities have been tracked by both government and industry researchers, demonstrating its significant impact on cybersecurity. In August, Insikt Group, a Recorded Future threat research division, reported that TA446 was linked to 94 new domains starting from March this year. This suggests that the group is actively modifying its infrastructure in response to public disclosures about its activities. This continuous change in attack infrastructure signifies the group's adaptability and resilience against security measures and public exposure. The U.S. and UK governments have identified TA446 as being linked to Russia’s Federal Security Service (FSB), specifically its Center 18 cyberespionage unit. This association with a state-sponsored entity indicates a high level of sophistication and resources behind TA446's operations. In conclusion, TA446 represents a serious and evolving threat to global cybersecurity, particularly for entities involved in international affairs and defense.