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Security teams have never had more visibility, yet rarely have they felt more uncertain. Signal pours in from endpoints, identities, cloud workloads, and a sprawling mix of third-party tools. The post Turning threat intelligence into decisive action with Defender Experts appeared first on Microsoft Security Blog.
Open a repository in Cursor on Windows and, if a file named git.exe is sitting in the project root, Cursor runs it. No click, no approval dialog, no warning that anything in the folder is about to execute
At least two distinct threat actors are weaponizing a novel evasion technique called OAuth client ID spoofing in cloud campaigns, while slipping past telemetry
New research reveals cyber-attackers can spoof OAuth Client IDs in Microsoft Entra ID, creating a stealthy path into cloud environments
Most security mess starts as admin work. A link gets clicked. A tool gets trusted. A bucket name gets reused. A setting stays loose because nobody wants to touch it
Microsoft has begun testing the Cloud Rebuild recovery feature in the latest Windows 11 Insider Preview builds released for users in the Experimental channel. [...]
The Miasma worm compromised 73 Microsoft GitHub repos, spreading via AI coding tools and stealing cloud credentials from developers and CI/CD systems. A self-replicating worm called Miasma has compromised 73 Microsoft GitHub repositories and forced GitHub staff to disable them. The affected repos include core Azure infrastructure like azure-functions-host and the entire Durable Task family […]
Miasma worm shapeshifts, but cloud secret-scouting remains the goal
Researchers uncovered a 230-node cloud-based email relay network after the actor PCPJack accidentally exposed tools, logs, and C2 files online A threat actor tracked as PCPJack compromised 230 cloud servers across Amazon Web Services, Google Cloud, and Microsoft Azure and turned them into a covert email relay network. Hunt.io researchers discovered the operation because PCPJack […]
The threat actor known as PCPJack has hijacked cloud servers associated with Amazon Web Services (AWS), Google Cloud, and Microsoft Azure to create a covert SMTP email relay network
A large-scale npm supply chain attack compromised over 90 versions of @redhat-cloud-services packages, silently infecting CI/CD environments and developer systems. The malicious code steals credentials from GitHub, cloud platforms, and local machines, then spreads like a worm by republishing trusted packages. Discover how the attack works, what data is at risk, and the steps you can take to protect your organization. The post Preinstall to persistence: Inside the Red Hat npm Miasma credential-stealing campaign appeared first on Microsoft Security Blog.
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. [...]
The Mini Shai-Hulud campaign used malicious npm packages to target cloud and CI/CD credentials across developer environments. This report details the attack chain, detection opportunities, and mitigation guidance to help organizations identify and disrupt related activity. The post Typosquatted npm packages used to steal cloud and CI/CD secrets appeared first on Microsoft Security Blog.
Consider a cached access key on a single Windows machine. It got there the way most cached credentials do - a user logged in, and the key stored itself automatically. Standard AWS behavior. No one misconfigured anything or violated a policy. Yet that single key, which was easily accessible to a minor-league attacker, could have opened a path to some 98% of entities in the company's cloud
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.
Chaotic Eclipse, the security researcher behind the recently disclosed Windows flaws, YellowKey and GreenPlasma, has released a proof-of-concept (PoC) for a Windows privilege escalation zero-day flaw that grants attackers SYSTEM privileges on fully patched Windows systems
Exposed UIs, weak authentication, and risky defaults could turn cloud-native AI apps on Kubernetes into potential targets by threat actors. Learn how exploitable misconfigurations lead to RCE and data leaks. The post When configuration becomes a vulnerability: Exploitable misconfigurations in AI apps appeared first on Microsoft Security Blog.
Cybersecurity researchers have disclosed details of a stealthy Python-based backdoor framework called DEEP#DOOR that comes with capabilities to establish persistent access and harvest a wide range of sensitive information from compromised hosts
Renegotiated Pact With Microsoft Clears OpenAI Path to Enterprise CloudsOpenAI has launched its models and tools on Amazon Web Services, one day after revising its agreement with Microsoft to end years of cloud exclusivity, a move likely driven by competitive pressure from Anthropic's hold on enterprise AWS customers.
A newly discovered threat actor is using Microsoft Teams, AWS S3 buckets, and custom "Snow" malware in a multipronged campaign.