Threat intelligence

The Microsoft Threat Intelligence community is made up of world-class experts, security researchers, analysts, and threat hunters who analyze 100 trillion signals daily to discover threats and deliver timely and timely, relevant insight to protect customers. See our latest findings, insights, and guidance.

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Microsoft Entra

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March 6

21 min read

AI as tradecraft: How threat actors operationalize AI

Threat actors are operationalizing AI to scale and sustain malicious activity, accelerating tradecraft and increasing risk for defenders, as illustrated by recent activity from North Korean groups such as Jasper Sleet and Coral Sleet (formerly Storm-1877).
January 6

16 min read

Phishing actors exploit complex routing and misconfigurations to spoof domains

Threat actors are exploiting complex routing scenarios and misconfigured spoof protections to send spoofed phishing emails, crafted to appear as internally sent messages.
October 20, 2025

20 min read

Inside the attack chain: Threat activity targeting Azure Blob Storage

Azure Blob Storage is a high-value target for threat actors due to its critical role in storing and managing massive amounts of unstructured data at scale across diverse workloads and is increasingly targeted through sophisticated attack chains that exploit misconfigurations, exposed credentials, and evolving cloud tactics.
October 7, 2025

23 min read

Disrupting threats targeting Microsoft Teams

Threat actors seek to abuse Microsoft Teams features and capabilities across the attack chain, underscoring the importance for defenders to proactively monitor, detect, and respond effectively.
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June 30, 2025

18 min read

Jasper Sleet: North Korean remote IT workers’ evolving tactics to infiltrate organizations

Since 2024, Microsoft Threat Intelligence has observed remote IT workers deployed by North Korea leveraging AI to improve the scale and sophistication of their operations, steal data, and generate revenue for the North Korean government.
May 29, 2025

12 min read

Defending against evolving identity attack techniques

Threat actors continue to develop and leverage various techniques that aim to compromise cloud identities.
February 13, 2025

10 min read

Storm-2372 conducts device code phishing campaign

Microsoft Threat Intelligence Center discovered an active and successful device code phishing campaign by a threat actor we track as Storm-2372.
October 8, 2024

9 min read

File hosting services misused for identity phishing

Since mid-April 2024, Microsoft has observed an increase in defense evasion tactics used in campaigns abusing file hosting services like SharePoint, OneDrive, and Dropbox.
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January 25, 2024

10 min read

Midnight Blizzard: Guidance for responders on nation-state attack

The Microsoft security team detected a nation-state attack on our corporate systems on January 12, 2024, and immediately activated our response process to investigate, disrupt malicious activity, mitigate the attack, and deny the threat actor further access.
December 12, 2023

16 min read

Threat actors misuse OAuth applications to automate financially driven attacks

Microsoft Threat Intelligence presents cases of threat actors misusing OAuth applications as automation tools in financially motivated attacks.
December 5, 2023

28 min read

Microsoft Incident Response lessons on preventing cloud identity compromise

In real-world customer engagements, Microsoft IR sees combinations of issues and misconfigurations that could lead to attacker access to customers’ Microsoft Entra ID tenants.
September 14, 2023

10 min read

Peach Sandstorm password spray campaigns enable intelligence collection at high-value targets

Since February 2023, Microsoft has observed a high volume of password spray attacks attributed to Peach Sandstorm, an Iranian nation-state group.

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