Inside the attack chain: Threat activity targeting Azure Blob Storage
Category:Industry News / Research & Tools
Microsoft details attack paths abusing Azure Blob Storage across the kill chain—from reconnaissance and misconfigured SAS tokens to lateral movement via blob‑triggered Functions and data exfiltration through static website hosting. The post maps techniques to MITRE ATT&CK and recommends controls such as Defender for Storage, RBAC/ABAC hardening, private endpoints, and malware scanning of blob uploads.
CORTEX Protocol Intelligence Assessment
Business Impact: Misconfigured storage can enable data theft and service compromise across AI, analytics, and backup workloads. Technical Context: Abuse of SAS, keys, event triggers, and metadata for covert C2 and exfiltration.
Strategic Intelligence Guidance
- Enforce secure transfer, least privilege, and short‑lived SAS tokens.
- Enable Defender for Storage and monitor for anomalous access.
- Harden Event Grid/Functions bindings and protect managed identities.
- Scan uploads, enable immutability/versioning, and audit keys.
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Intelligence Source: Inside the attack chain: Threat activity targeting Azure Blob Storage | Microsoft Security Blog | Oct 21, 2025