Star Blizzard Targets 100+ Organizations with Phishing and RedFlick Technique

Russian group Star Blizzard expands phishing campaigns with a new malware delivery RedFlick technique, using scheduled tasks to deliver the CosmicPulse backdoor...

Russia's Star Blizzard Targets 100+ Organizations With Fake Event Invites to Deliver Backdoor

Russian state hackers known as Star Blizzard have been using fake event invitations to trick people into installing a backdoor on their Windows computers, according to Microsoft. The campaigns, aimed at people and organizations tied to Ukraine, have affected more than 100 organizations since...

Star Blizzard refines phishing and malware delivery with the RedFlick technique

In this article 1. Star Blizzard TTPs observed in 2026 2. Defending against Star Blizzard and RedFlick-related activity 3. Microsoft Defender detections 4. Hunting queries 5. Indicators of compromise Since January 2026, Microsoft has observed Russian state threat actor Star Blizzard evolve their...

Star Blizzard refines phishing and malware delivery with the RedFlick technique

In this article 1. Star Blizzard TTPs observed in 2026 2. Defending against Star Blizzard and RedFlick-related activity 3. Microsoft Defender detections 4. Hunting queries 5. Indicators of compromise Since January 2026, Microsoft has observed Russian state threat actor Star Blizzard evolve their...

TA446 Deploys DarkSword iOS Exploit Kit in Targeted Spear-Phishing Campaign

Proofpoint has disclosed details of a targeted email campaign in which threat actors with ties to Russia are leveraging the recently disclosed DarkSword exploit kit to target iOS devices. The activity has been attributed with high confidence to the Russian state-sponsored threat group known as...

WhatsApp spear phishing campaign uses QR codes to add device

A cybercriminal campaign linked to Russia is deploying QR codes to access the WhatsApp accounts of high-profile targets like journalists, members of think tanks, and employees of non-governmental organizations NGOs, according to new details revealed by Microsoft. The group, which Microsoft tracks...

Russian Star Blizzard Targets WhatsApp Accounts in New Spear-Phishing Campaign

The Russian threat actor known as Star Blizzard has been linked to a new spear-phishing campaign that targets victims' WhatsApp accounts, signaling a departure from its longstanding tradecraft in a likely attempt to evade detection. "Star Blizzard's targets are most commonly related to government...

Microsoft Warns of COLDRIVER's Evolving Evasion and Credential-Stealing Tactics

The threat actor known as COLDRIVER has continued to engage in credential theft activities against entities that are of strategic interests to Russia while simultaneously improving its detection evasion capabilities. The Microsoft Threat Intelligence team is tracking under the cluster as Star...

Star Blizzard increases sophistication and evasion in ongoing attacks

Microsoft Threat Intelligence continues to track and disrupt malicious activity attributed to a Russian state-sponsored actor we track as Star Blizzard formerly SEABORGIUM, also known as COLDRIVER and Callisto Group. Star Blizzard has improved their detection evasion capabilities since 2022 while...

CISA and International Partners Release Advisory on Russia-based Threat Actor Group, Star Blizzard

Today, the Cybersecurity and Infrastructure Security Agency CISA—in coordination with the United Kingdom’s National Cyber Security Centre UK-NCSC, Australian Signals Directorate’s Australian Cyber Security Centre ASD’s ACSC, Canadian Centre for Cyber Security CCCS, New Zealand National Cyber...