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Inboxfuscation: Because Rules Are Meant to Be Broken
Permiso launches Inboxfuscation, an open-source tool enabling organizations to detect Unicode-obfuscated Microsoft Exchange inbox rules and secure Microsoft 365.
This analysis examines the technical implementation of Unicode obfuscation in Exchange environments, demonstrates real-world attack scenarios, and provides actionable detection and mitigation strategies for security professionals. Detection Blind Spots: Most security tools cannot identify Unicode-based evasion Compliance Risks: Obfuscated rules may not appear in audit reports Incident Response Challenges: Traditional forensic methods miss Unicode complexity By developing proactive detection capabilities and understanding the technical mechanisms of Unicode obfuscation, organizations can stay ahead of potential attackers who may discover and weaponize these techniques.
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