Latest cybersecurity reporting from selected sources.

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. […]

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

Victims Increasingly Face Multiple Compromises From a Single IncidentIdentity theft scams are increasingly unfolding as coordinated, AI-assisted attack chains that begin with phishing or impersonation escalate into account takeovers, device compromise and broader fraud, according to the Identity Theft Resource Center.

Company Pushes Key Rotation After 3,800 Repositories CompromisedHacked code repository GitHub warned administrators of self-hosted git servers to rotate public encryption keys following a May 18 incident involving a poisoned VS Code extension used by an employee. GitHub CISO Alexis Wales in a Tuesday update said the repository is rotating all keys.

Breach Is Among Several Recent Major Incidents Involving Billing Software ProvidersA publicly traded cancer treatment firm notified investors that a yet-undisclosed number of patients' information was compromised in a 2025 cybersecurity incident involving a third-party billing software vendor. The Oncology Institute provides cancer treatment care to nearly 2 million patients.

Incident Comes Months After NYS Fined Liberty Mutual $2M in Other HacksInsurance carrier Liberty Mutual is facing proposed class action litigation filed by policyholders who allege their sensitive information was compromised in an April data theft claimed by cybercrime gang Everest Group. The incident is the company's latest data security related troubles.

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.

Grafana Labs, on May 19, 2026, said an investigation into its recent breach found no evidence of customer production systems or operations being compromised

Incident Involved an Unnamed Third-Party VendorNew York City's municipal healthcare system is notifying nearly 2 million patients of a hacking incident discovered earlier this year involving a third-party vendor. The breach compromised a long list of information, including biometric data such as fingerprints.

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.

Vercel on Wednesday revealed that it has identified an additional set of customer accounts that were compromised as part of a security incident that enabled unauthorized access to its internal systems

Blames outfit called Context.ai, which reckons an agentic OAuth tangle caused the incident Vercel, the company that created the open source Next.js web development framework, has a data leak that led to compromise of some customer credentials, and blamed an outfit called Context.ai for the mess.…

Web infrastructure provider Vercel has disclosed a security breach that allows bad actors to gain unauthorized access to "certain" internal Vercel systems

OpenAI revealed a GitHub Actions workflow used to sign its macOS apps led to the download of the malicious Axios library on March 31, but noted that no user data or internal system was compromised

Unknown threat actors compromised CPUID ("cpuid[.]com"), a website that hosts popular hardware monitoring tools like CPU-Z, HWMonitor, HWMonitor Pro, and PerfMonitor, for less than 24 hours to serve malicious executables for the software and deploy a remote access trojan called STX RAT

Unknown threat actors have hijacked the update system for the Smart Slider 3 Pro plugin for WordPress and Joomla to push a poisoned version containing a backdoor

Most UK manufacturers compromised last year suffered financial loss, says ESET

Trivy, a popular open-source vulnerability scanner maintained by Aqua Security, was compromised a second time within the span of a month to deliver malware capable of stealing sensitive CI/CD secrets

Compromise Affects Healthcare Clients of Co.'s Revenue Cycle Management ServicesBilling services vendor Trizetto Provider Solutions is notifying 3.4 million individuals of a hacking incident discovered in October 2025 that investigators have now determined started nearly a year earlier, when threat actors accessed the company's healthcare clients' insurance related data.