Microsoft Teams Support Call Leads to Quick Assist Compromise in New Vishing Attack

Microsoft Detection and Response Team details a sophisticated voice phishing (vishing) campaign that successfully compromised a corporate environment in November 2025. Unlike conventional intrusions that rely on software exploits, this attack weaponized trust, collaboration platforms, and built-in Windows tooling to gain initial access. The threat actor initiated the campaign by impersonating IT support personnel through […]

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