Storm-0501’s evolving techniques lead to cloud-based ransomware
Financially motivated threat actor Storm-0501 has continuously evolved their campaigns to achieve sharpened focus on cloud-based tactics, techniques, and procedures (TTPs).
Microsoft Defender for Identity
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Modernize your identity defense with Microsoft Identity Threat Detection and Response
Microsoft’s Identity Threat Detection and Response solution integrates identity and security operations to provide proactive, real-time protection against sophisticated identity-based cyberthreats. -
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. -
Defending against evolving identity attack techniques
Threat actors continue to develop and leverage various techniques that aim to compromise cloud identities. Prevent threats with Microsoft Defender
The Microsoft Defender family offers comprehensive threat prevention, detection, and response capabilities for everyone—from individuals looking to protect their family to the world’s largest enterprises.
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New Russia-affiliated actor Void Blizzard targets critical sectors for espionage
Microsoft Threat Intelligence has discovered a cluster of worldwide cloud abuse activity conducted by a threat actor we track as Void Blizzard, who we assess with high confidence is Russia-affiliated and has been active since at least April 2024. -
Why security teams rely on Microsoft Defender Experts for XDR for managed detection and response
Microsoft Defender Experts for XDR is a mature and proven service that triages, investigates, and responds to incidents and hunts for threats on a customer’s behalf around the clock. -
Chinese threat actor Storm-0940 uses credentials from password spray attacks from a covert network
Since August 2023, Microsoft has observed intrusion activity targeting and successfully stealing credentials from multiple Microsoft customers that is enabled by highly evasive password spray attacks. -
Storm-0501: Ransomware attacks expanding to hybrid cloud environments
August 27, 2025 update: Storm-0501 has continuously evolved to achieve sharpened focus on cloud-based TTPs as their primary objective shifted from deploying on-premises endpoint ransomware to using cloud-based ransomware tactics. Retain Microsoft Security Experts
Microsoft Security Experts are now available to strengthen your team with managed security services. Learn how to defend against threats with security experts.
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Peach Sandstorm deploys new custom Tickler malware in long-running intelligence gathering operations
Between April and July 2024, Microsoft observed Iranian state-sponsored threat actor Peach Sandstorm deploying a new custom multi-stage backdoor, which we named Tickler. -
Ransomware operators exploit ESXi hypervisor vulnerability for mass encryption
Microsoft Security researchers have observed a vulnerability used by various ransomware operators to get full administrative access to domain-joined ESXi hypervisors and encrypt the virtual machines running on them. -
Microsoft named an overall leader in KuppingerCole Leadership Compass for ITDR
Today we are thrilled to announce that Microsoft has been recognized as an overall leader in the KuppingerCole Leadership Compass Identity Threat Detection and Response: IAM Meets the SOC. -
Analyzing Forest Blizzard’s custom post-compromise tool for exploiting CVE-2022-38028 to obtain credentials
Since 2019, Forest Blizzard has used a custom post-compromise tool to exploit a vulnerability in the Windows Print Spooler service that allows elevated permissions.
