Executive Summary

Unit 42’s research reveals the Spring Ring campaign uses Microsoft Teams and voice phishing to deliver malware, specifically targeting enterprise domain controllers. The analysis details how attackers exploit Teams’ voice features to gain initial access and deploy malicious payloads within corporate networks.

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Intelligence Metadata - Source Publisher: Unit 42 (Palo Alto) - Published Date: 2026-08-31T10:00:36+00:00 - Category: research

Original Description: Learn how the Spring Ring campaign abuses Microsoft Teams and voice phishing to deploy malware and target enterprise domain controllers. The post Spring Ring: An Inside Look at Voice Phishing Campaigns in Microsoft Teams appeared first on Unit 42.

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