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highDefendersecurity advisoryms_security_blog · Sep 29, 2026
Star Blizzard refines phishing and malware delivery with the RedFlick technique
Microsoft has identified a new technique, RedFlick, used by Star Blizzard for phishing and malware delivery. This change highlights the evolving threat landscape and the need for enhanced security measures.
“Since January 2026, Microsoft has observed Russian state threat actor Star Blizzard evolve their detection evasion capabilities through large-scale phishing campaigns, the use of accounts on compromised websites, and a novel malware delivery technique, tracked by Microsoft as “RedFlick”. The post St”
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threat_protectionendpoint_security
Audience
security_engineer
Environment
cloudon_premises
Classification confidence: 95%
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