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Threat Actors Exploit Critical FortiClient EMS Flaw to Deploy Credential Stealer

Threat Actors Exploit Critical FortiClient EMS Flaw to Deploy Credential Stealer

May 28, 2026 Vulnerability / Endpoint Security
Threat actors are continuing to exploit a critical, now-patched security flaw impacting FortiClient Endpoint Management Server (EMS) deployments to deliver credential-stealing malware. "The campaign abused trusted endpoint management infrastructure to deliver malware across managed endpoints," Arctic Wolf said . "Threat actors disguised the credential stealer payload as a Fortinet endpoint update, silently executing the malicious executable through PowerShell." The activity, observed by the cybersecurity company in May 2026, involves the exploitation of CVE-2026-35616 (CVSS score: 9.1), a critical pre-authentication API access bypass leading to privilege escalation. The issue was addressed by Fortinet in FortiClient EMS 7.4.7 and later. A successful compromise is followed by the threat actor taking steps to modify configurations to defer firmware upgrade reminders, as well as modifying a Remote Access Profile configuration and endpoint policy to insert a mal...
Microsoft Slams Public Zero-Day Disclosures Amid GitHub Researcher Account Removal

Microsoft Slams Public Zero-Day Disclosures Amid GitHub Researcher Account Removal

May 28, 2026 Zero Day / Vulnerability Disclosure
Microsoft has come out strongly in favor of Coordinated Vulnerability Disclosure (CVD), urging the research community to share their findings and give affected vendors an opportunity to better understand the impact and address them before they are publicly disclosed. The development comes after a researcher named Chaotic Eclipse (aka Nightmare-Eclipse) disclosed details of multiple zero-day vulnerabilities affecting multiple Windows components, including Defender and BitLocker, over the past month, citing a breakdown in Microsoft's handling of the vulnerability disclosure process. "In recent weeks, several zero-day vulnerabilities have been publicly disclosed," the tech giant said . "The details of these vulnerabilities were not shared with Microsoft prior to release, and the disclosures put our customers at unnecessary risk." "In response to the unnecessary risk created by these disclosures, our security teams have been working around the clock to...
ThreatsDay Bulletin: Claude Security Plugin, Azure Priv-Esc, Kali365 MFA Bypass, FIFA Scams +15 More

ThreatsDay Bulletin: Claude Security Plugin, Azure Priv-Esc, Kali365 MFA Bypass, FIFA Scams +15 More

May 28, 2026 Hacking News / Cybersecurity News
Every time you think the industry has finally stopped doing some reckless, low-effort crap, somebody spins up a fresh box full of sketchy loaders, fake installers, recycled social-engineering bait, and enough exposed infrastructure to make you wonder if prod is just a public beta now - meanwhile some researcher casually drops a technique that turns a "minor" foothold into total account compromise because apparently six digits and blind trust were all that stood between your vault and getting absolutely pwned. Cool. Great. Love that for us. Then there's the supply chain mess... signed binaries, poisoned updates, legit tooling getting hijacked like it's still 2017, plus a few reports this week that feel less like advanced tradecraft and more like watching skiddies discover low-hanging fruit with enterprise branding slapped on top. The weird part isn't that it works. The weird part is how damn easy it still is. Anyway. Grab caffeine. Let's get into it. ...
cyber security

Securing AI Use Within Your Organization Starts Here

websiteSANS InstituteAI Security
The risks of ungoverned AI within your organization are compounding at machine speed. Turn your AI security priorities into actionable steps with this step-by-step guide.
cyber security

Surviving the Mythos Era: Transitioning to Continuous Exposure Management

websiteXM CyberAI Security / Vulnerability Management
Stream this on-demand fireside chat to learn how to defend critical assets against AI-speed exploitation.
New AI Usage Report: Enterprise AI Risk Is Heavily Concentrated Among a Small Group of AI "Power users"

New AI Usage Report: Enterprise AI Risk Is Heavily Concentrated Among a Small Group of AI "Power users"

May 28, 2026 Artificial Intelligence / Enterprise Security
State of AI Usage Report 2026 ( full report here ) by LayerX Security reveals the extent of the enterprise AI visibility gap and why most organizations still don't understand where their AI exposure is actually coming from. The research shows that enterprise AI risk is not distributed evenly across users or platforms. Instead, it is heavily concentrated among a small group of AI power users and a handful of dominant AI platforms that drive the majority of enterprise AI activity and sensitive data exposure. At the same time, AI usage is rapidly fragmenting across personal accounts, AI browser extensions, embedded copilots, AI connectors, and secondary AI tools operating outside traditional visibility and governance controls. The result is a fragmented AI ecosystem that most organizations still cannot fully see or govern. While AI Is Everywhere in the Enterprise, Most Employees Are Casual The common perception is that "everyone uses AI now". The report paints a much ...
JINX-0164 Targets Cryptocurrency Firms with Fake Recruiter Lures and macOS Malware

JINX-0164 Targets Cryptocurrency Firms with Fake Recruiter Lures and macOS Malware

May 28, 2026 Supply Chain Attack / Malware
A new campaign orchestrated by a previously undocumented threat actor has targeted cryptocurrency organizations with an aim to facilitate digital asset theft using recruitment-themed social engineering and bespoke macOS malware. "These campaigns leveraged sophisticated social engineering techniques, custom macOS malware, and deep targeting of CI/CD infrastructure," Wiz researchers Shira Ayal, Eden Abergil, Andre Maccarone, Yuval Dan, and Benjamin Read said . "The used methods enabled the threat actor to move laterally from compromised employee laptops to code distribution systems and development infrastructure." The Google-owned cloud security company is tracking the activity under the moniker JINX-0164 . The threat actor is assessed to be active since at least mid-2025 and motivated by financial gain, targeting developers through recruitment-themed and other social engineering techniques to siphon cryptocurrencies. In at least one case, the adversary is said t...
Grandoreiro Malware and BTMOB RAT Campaigns Target Windows and Android Users

Grandoreiro Malware and BTMOB RAT Campaigns Target Windows and Android Users

May 27, 2026 Financial Fraud / Malware
Latin America and Europe become the target of two banking trojan campaigns that are designed to infect Windows and Android devices with Grandoreiro and BTMOB malware, respectively. That's according to new findings from WatchGuard and ESET, which have observed the two malware families being used to single out companies in Spain, Portugal, and Mexico, as well as mobile users in Brazil. The Grandoreiro campaign "uses the DLL Side-Loading technique abusing four different software, targeting banks in Portugal," WatchGuard researcher Euler Neto said . Active since 2016, Grandoreiro is an actively evolving banking malware that's capable of stealing credentials associated with thousands of financial institutions across 45 countries and territories. It's typically distributed via phishing emails, instructing recipients to click on sketchy links. Despite some arrests and attempts by Brazilian authorities to dismantle its infrastructure in early 2024, the malware h...
Malicious npm Package Stole Files From Claude AI User Directory via GitHub

Malicious npm Package Stole Files From Claude AI User Directory via GitHub

May 27, 2026 Threat Intelligence / Supply Chain Attack
Cybersecurity researchers have discovered a new malicious package on the npm registry that comes with information stealing capabilities. According to OX Security, the package, named " mouse5212-super-formatter ," is designed to upload files from "/mnt/user-data," a dedicated directory used by Anthropic's Claude artificial intelligence (AI) tool to handle uploads and outputs in the background. The activity has been codenamed Malware-Slop . "By analyzing the malware, it turns out that the script presents itself as an internal 'archive deployment sync' utility that validates or initializes a GitHub repository, captures a lightweight 'network status' snapshot, and then performs a structured synchronization of local workspace files into a remote tracking tree," researchers Moshe Siman Tov Bustan and Nir Zadok said . In reality, however, it authenticates to GitHub during the postinstall stage, either using a GitHub access token found i...
5 Steps to Managing Shadow AI Tools Without Slowing Down Employees

5 Steps to Managing Shadow AI Tools Without Slowing Down Employees

May 27, 2026 Artificial Intelligence / Enterprise Security
When an employee installs an AI writing assistant, connects a coding copilot to their IDE, or starts summarizing meetings with a new browser tool, they are doing exactly what a productive employee should do: finding faster ways to work. Across most organizations today, employees are running three to five AI tools on any given day. Most were never reviewed by IT. A significant portion connects to corporate data through OAuth tokens or browser sessions, giving them access to shared drives, emails, and internal documents the employee never specifically intended to expose. Security teams often have no visibility into any of it. This is the shadow AI gap, and it is widening fast. Most security tools were built to monitor email and network traffic flowing through the corporate network. A browser-based AI tool that connects to company data through a quick login approval bypasses those controls entirely, because it never passes through the corporate network at all. According to Gartner , ...
GlassWorm Malware Takedown Disrupts Developer Supply Chain Attack Infrastructure

GlassWorm Malware Takedown Disrupts Developer Supply Chain Attack Infrastructure

May 27, 2026 Malware / Threat Intelligence
CrowdStrike, in partnership with Google and the Shadowserver Foundation, has announced the simultaneous disruption of all command-and-control (C2) channels associated with GlassWorm , a persistent software chain campaign targeting software developers through malicious packages and extensions. "Since at least early 2025, GlassWorm operators have systematically targeted software developers, a population with access to source code repositories, cloud platforms, CI/CD pipelines, and package registries," CrowdStrike said . The development comes as developers have increasingly become lucrative targets for pulling off software supply chain attacks, enabling attackers to leverage a single compromised workstation to impact thousands of downstream organizations and users at once. GlassWorm, since its emergence last year, has conducted a "multi-pronged campaign" using trojanized VS Code extensions published on both the Microsoft VS Code Marketplace and Open VSX, ther...
3 SOC Steps that Shut Down Incident Risks Early

3 SOC Steps that Shut Down Incident Risks Early

May 27, 2026 Threat Intelligence / Incident Response
Most organizations still picture cyber defense as a fortress problem: build stronger walls, add more guards, buy another detection engine. But modern incidents rarely crash through the front gate. They drift in disguised as routine activity, hide inside legitimate processes, and quietly accumulate risk long before anyone labels them an "incident." That changes the role of the SOC entirely. The best SOCs today are not simply detecting attacks. They are reducing the amount of uncertainty the business can accumulate. Every unidentified process, every unenriched alert, every delayed investigation becomes operational debt that compounds silently until it erupts into downtime, compliance issues, customer impact, or reputational damage. Prevention, then, is no longer about blocking everything at the perimeter. It is about shrinking the time between "something changed" and "we understand exactly what it means." That requires three things: continuous...
Gitea Vulnerability Exposes Private Container Images without Authentication

Gitea Vulnerability Exposes Private Container Images without Authentication

May 27, 2026 Vulnerability / Software Security
Cybersecurity researchers have disclosed a security flaw in Gitea, an open-source, self-hosted platform for version control, that allows unauthenticated remote attackers to pull private container images from Gitea deployments without requiring an account, password, or other credentials. The vulnerability, tracked as CVE-2026-27771 (CVSS score: 8.2), affects all versions of Gitea prior to 1.26.2 , which addresses the issue. According to Noscope, the security defect likely impacts more than 30,000 deployments across over 30 countries and went undetected for close to four years. The vast majority of the exposures are in China, the U.S., Germany, France, and the U.K. Affected organizations span healthcare providers, aerospace manufacturers, retail infrastructure, and internet service providers. "On affected versions, the private designation on a container repository did not deliver the protection operators reasonably expected it to," Noscope said . "Gitea's cont...
AI Chatbot Recommendations Redirect Users to Cryptojacking Malware Sites

AI Chatbot Recommendations Redirect Users to Cryptojacking Malware Sites

May 27, 2026 Artificial Intelligence / Threat Intelligence
Microsoft has warned of an active cryptojacking campaign that makes use of artificial intelligence (AI) chatbot interactions as a mechanism for surfacing malicious download sites. "This emerging delivery technique extends social engineering beyond conventional search results and increases the visibility of malicious software recommendations," Microsoft Defender Experts and the Microsoft Defender Security Research Team said in a report published Tuesday. The activity, per the tech giant, impersonates legitimate system utilities like CrystalDiskInfo, HWMonitor, Display Driver Uninstaller, FurMark, K-Lite Codec Pack, and PDFgear, likely in an attempt to target users who own high-performance GPUs. The idea is to focus on compromising systems with higher mining value than indiscriminately infecting a large number of machines, it added. The goals of the campaign are not merely financially motivated. The threat actors have also been found to establish persistent remote acce...
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