Star Blizzard

Russia (FSB) · also known as Callisto Group, ColdRiver, Cold River, SEABORGIUM

Timeline (last 30 days)

• Russian state hackers use new RedFlick technique to push malware — BleepingComputer, 2026-09-30
• Russia's Star Blizzard Ditches ClickFix to Widen Phishing Net — Dark Reading, 2026-09-30
• Russian FSB-linked hackers scale up phishing attacks against Ukraine supporters — The Record, 2026-09-30
• Russian APT Star Blizzard Uses ‘RedFlick’ Infection Chain in Recent Attacks — SecurityWeek, 2026-09-30
• Russian hackers Star Blizzard expand targeting, change up tactics to reach Ukraine and beyond — CyberScoop, 2026-09-29
• Russia's Star Blizzard Targets 100+ Organizations With Fake Event Invites to Deliver Backdoor — The Hacker News, 2026-09-29
• Star Blizzard refines phishing and malware delivery with the RedFlick technique — Microsoft Security Blog, 2026-09-29