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Microsoft shipped its largest Patch Tuesday on record today, and two of the fixes close holes that attackers are already exploiting. The release covers 622 of Microsoft's own CVEs by its Security Update Guide count, more than triple June's previous high of around 200
Huntress found an AI-generated PowerShell script used for AD reconnaissance, showing attackers are using AI to create custom, evasive tools. During an incident response investigation on June 3, 2026, Huntress analyst Jevon Ang recovered a PowerShell script from a compromised Windows Server that the attacker had used to map out the victim’s Active Directory environment. […]
New Microsoft research shows how attackers can hijack AI agents that act on a user's behalf, using nothing more than a poisoned tool description to make the agent quietly hand over company data to an outsider
Microsoft on Monday confirmed that it temporarily removed some GitHub repositories in response to a recent security incident that led to 73 of its open-source projects being compromised to inject an information stealer into the code
Microsoft's GitHub repositories have become the latest to fall victim to the ongoing Miasma self-replicating supply chain attack campaign
When a researcher went public with Microsoft vulnerabilities, it laid bare a conflict that has never really been solved. The post Nightmare Eclipse incident shows the researcher-vendor fights may never fully go away appeared first on CyberScoop.
Microsoft says an ongoing incident is preventing users of its Teams collaboration platform and Office for the web cloud-based productivity suite from opening files. [...]
Microsoft is working to address an ongoing incident preventing customers from setting up multi-factor authentication (MFA) or accessing the My Sign-Ins platform. [...]
Microsoft is working to address an ongoing incident preventing customers from setting up multi-factor authentication (MFA) or accessing the My Sign-Ins platform. [...]
Microsoft’s AI red team lead talked to CyberScoop about the goals behind open sourcing a pair of security tools meant for developers and incident responders. The post Meet Rampart and Clarity, Microsoft’s new red team combo AI agents appeared first on CyberScoop.
GitHub said late Tuesday that internal repositories were exfiltrated after an employee device was compromised through a poisoned Visual Studio Code extension, an incident that underscores the growing risks facing software development platforms and the ecosystems built around third-party developer tools. The Microsoft-owned company said in posts on X that it detected and contained the […] The post GitHub says internal repositories were impacted in poisoned VS Code extension attack appeared first on CyberScoop.
Storm-2949 turned stolen credentials into a cloud-wide breach, moving from identity compromise to large-scale data theft without using malware. This incident shows how threat actors can exploit trusted systems to operate undetected. The post How Storm-2949 turned a compromised identity into a cloud-wide breach appeared first on Microsoft Security Blog.
Microsoft Incident Response investigated an attack operated through legitimate and trusted administrative mechanisms to blend seamlessly into routine operations and remain undetected demonstrating that intrusions have increasingly avoided using noisy exploits, obvious malware, or custom tooling, instead leveraging systems that organizations already trust within their environments. The post Undermining the trust boundary: Investigating a stealthy intrusion through third-party compromise appeared first on Microsoft Security Blog.
The Iranian state-sponsored hacking group known as MuddyWater (aka Mango Sandstorm, Seedworm, and Static Kitten) has been attributed to a ransomware attack in what has been described as a "false flag" operation
Monday is back, and the weekend’s backlog of chaos is officially hitting the fan. We are tracking a critical zero-day that has been quietly living in your PDFs for months, plus some aggressive state-sponsored meddling in infrastructure that is finally coming to light. It is one of those mornings where the gap between a quiet shift and a full-blown incident response is basically
Also, More ShinyHunters Breaches, North Korea Laptop Farm Operator SentencedThis week, Finland's Aleksanteri Kivimäki sentenced. ShinyHunters breaches. Laptop farm rancher sentenced. Oregon state agency hacker sentenced. African scammers arrested. MuddyWater AI-assisted hacks. Advantest ransomware incident, SolarWinds and Microsoft patches. FileZen flaw. QualDerm breach.
Microsoft is working to mitigate an ongoing incident that has been blocking users in Europe from accessing the company's AI-powered Copilot digital assistant. [...]
Microsoft is working to mitigate an ongoing incident that has been blocking access to some Defender XDR portal capabilities for the past 10 hours. [...]
Microsoft is investigating an ongoing incident that is preventing some customers from accessing Microsoft 365 applications. [...]
Microsoft is investigating an ongoing incident causing intermittent issues for users attempting to access SharePoint Online sites. [...]