Volexity (@volexity.com)

@volexity.com tracks a variety of threat actors abusing Device Code & OAuth authentication workflows to phish credentials, which continue to see success due to creative social engineering. Our latest blog post details Russian threat actor UTA0355’s campaigns impersonating European security events.

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Dangerous Invitations: Russian Threat Actor Spoofs European Security Events in Targeted Phishing Attacks In early 2025, Volexity published two blog posts detailing a new trend among Russian threat actors targeting organizations through the abuse of Microsoft 365 OAuth and Device Code authentication workf... https://www.volexity.com/blog/2025/12/04/dangerous-invitations-russian-threat-actor-spoofs-european-security-events-in-targeted-phishing-attacks/