New Russia-Linked GREYVIBE Targets Ukraine with AI-Powered Cyberattacks

A previously undocumented threat actor dubbed GREYVIBE has been attributed to ongoing and persistent attacks targeting Ukraine and Ukraine-related entities since at least August 2025. GREYVIBE, per WithSecure, is assessed to be a Russian-speaking group operating broadly in the Russian time zone,...

What 2,000 Exposed Vibe-Coded Apps Reveal About the Limits of Most Security Stacks

Shadow AI used to mean employees pasting things they shouldn't into ChatGPT. It now means something bigger: employees building full applications with AI, wiring them into production systems, and publishing them on the open internet. Without Security or IT in the loop. The artifact moved from a...

Malicious Sicoob NuGet Steals Banking Credentials as npm Packages Target Cloud Secrets

Cybersecurity researchers have discovered a malicious NuGet package that masquerades as a C software development kit for Sicoob, one of Brazil's largest cooperative financial systems, to siphon client IDs and PFX certificates. According to Socket, versions 2.0.0 through 2.0.4 of "Sicoob.Sdk"...

Kimsuky Deploys HTTPSpy, Expands Arsenal with HelloDoor and VS Code Tunnels

The North Korean state-sponsored threat actor known as Kimsuky aka Velvet Chollima has been attributed to a fresh set of cyber attacks targeting South Korean military and corporate entities through March and April 2026. "Kimsuky employed a range of tailored social engineering tactics, such as...

Critical Gogs RCE Vulnerability Lets Any Authenticated User Execute Arbitrary Code

A critical security vulnerability has been disclosed in Gogs, a popular open-source self-hosted Git service, that allows an authenticated user to execute arbitrary code under certain conditions. The security flaw, per Rapid7, is rated 9.4 on the CVSS scoring system. It does not have a CVE...

Threat Actors Exploit Critical FortiClient EMS Flaw to Deploy Credential Stealer

Threat actors are continuing to exploit a critical, now-patched security flaw impacting FortiClient Endpoint Management Server EMS deployments to deliver a credential-stealing malware family dubbed EKZ Infostealer. "The campaign abused trusted endpoint management infrastructure to deliver malware...

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

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...

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

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...

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

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...

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

Grandoreiro Malware and BTMOB RAT Campaigns Target Windows and Android Users

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 t...

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

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...

5 Steps to Managing Shadow AI Tools Without Slowing Down Employees

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...

GlassWorm Malware Takedown Disrupts Developer Supply Chain Attack Infrastructure

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...

3 SOC Steps that Shut Down Incident Risks Early

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 accumulat...

Gitea Vulnerability Exposes Private Container Images without Authentication

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...

AI Chatbot Recommendations Redirect Users to Cryptojacking Malware Sites

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...

MuddyWater Uses DLL Side-Loading in Espionage Campaign Targeting 9 Countries

The Iranian hacking group known as MuddyWater has been linked to a new campaign affecting at least nine organizations across nine countries on four continents in the first quarter of 2026. The activity targeted industrial and electronics manufacturing, education and public-sector bodies, financia...

[THN Webinar] New AI DDoS Attacks Are Smarter. Learn How to Fight Back

Every single day, hackers are finding new ways to crash websites and steal data. But right now, something has changed. Hackers are no longer working alone. They are now using powerful Artificial Intelligence AI tools to make their attacks faster, stronger, and much harder to stop. According to...

Microsoft Patches SharePoint RCE Flaw CVE-2026-45659 Across Server Versions

Microsoft has rolled out updates to fix a remote code execution vulnerability impacting SharePoint that could be exploited by bad actors in attacks without requiring any specialized conditions to be met. The vulnerability, tracked as CVE-2026-45659 , carries a CVSS score of 8.8. It has been...

MFA Prompt Bombing: Why Your Second Factor Isn't Saving You

Multi-factor authentication MFA was supposed to close a critical gap in identity security. It meant that, even if an attacker possessed the account credentials, they couldn't log in without the second factor. While that logic was sound, attackers have now figured out that they don't need to steal...

CERT-In Recommends 12-Hour Patching for Internet-Facing Flaws Amid AI-Assisted Attacks

The Indian Computer Emergency Response Team CERT-In has issued new guidelines requiring organizations to patch critical security vulnerabilities in internet-exposed systems within 12 hours of being flagged where "feasible" to safeguard against potential threats stemming from threat actors' abuse ...

Iranian Hackers Deploy MiniFast and MiniJunk V2 via Phishing and SEO Poisoning

The Iranian state-sponsored threat actor known as Nimbus Manticore aka Screening Serpens and UNC1549 has been attributed to a fresh campaign using lures impersonating organizations in the aviation and software sectors across the U.S., Europe, and the Middle East following the joint U.S.-Israeli...

KnowledgeDeliver LMS Flaw Exploited to Deploy Godzilla and Cobalt Strike

A now-patched high-severity security flaw affecting Digital Knowledge KnowledgeDeliver, a Learning Management System LMS popular in Japan, was exploited as a zero-day to deliver the Godzilla web shell and ultimately facilitate the deployment of Cobalt Strike Beacon. The vulnerability, tracked as...

⚡ Weekly Recap: Linux Flaws, Defender 0-Days, Router Botnets, and Supply Chain Chaos

Monday recap. Same mess, new week. A sketchy dev tool got people pwned, old bugs came back from the dead, and security products somehow needed protecting from themselves. A bunch of companies spent the week checking old boxes and forgotten servers they should've patched years ago. Good times...

Ghost CMS CVE-2026-26980 Exploited to Hijack 700+ Sites for ClickFix Attacks

Threat actors are exploiting a recently disclosed critical security flaw in Ghost CMS to inject malicious JavaScript code with an aim to fuel ClickFix attacks. According to QiAnXin XLab, the activity involves the exploitation of CVE-2026-26980 CVSS score: 9.4, an SQL injection vulnerability in...

The Alert Firehose Finally Meets Its Match

Ask a cybersecurity pro about Network Detection and Response NDR and you might still hear "Noisy," "Too much data." But ask the teams running NDR that includes agentic AI capabilities and you'll hear they're actually using it to catch threats earlier, triage faster, and chase fewer false positive...

Lazarus Deploys RemotePE Memory-Only RAT Against Financial and Crypto Firms

Cybersecurity researchers have shed light on a cross-platform malware called RemotePE that has been put to use by the North Korea-linked Lazarus Group in attacks targeting financial and cryptocurrency organizations. RemotePE, per NCC Group subsidiary Fox-IT, is part of a multi-stage attack chain...

TrapDoor Supply Chain Attack Spreads Credential-Stealing Malware via npm, PyPI, and CratesIO

A new coordinated cross-ecosystem software supply chain attack campaign has targeted npm, PyPI, and Crates.io to distribute credential-stealing malware. The campaign, codenamed TrapDoor , spans more than 34 malicious packages across over 384 versions. The earliest activity was recorded on May 22,...

npm Adds 2FA-Gated Publishing and Package Install Controls Against Supply Chain Attacks

GitHub has rolled out new controls for npm to improve the security of the software supply chain, giving maintainers the ability to explicitly approve a release prior to the packages becoming publicly available for installation. Called staged publishing, the feature is now generally available on...

Packagist Supply Chain Attack Infects 8 Packages Using GitHub-Hosted Linux Malware

A new "coordinated" supply chain attack campaign has impacted eight packages on Packagist including malicious code designed to run a Linux binary retrieved from a GitHub Releases URL. "Although the affected packages were all Composer packages, the malicious code was not added to composer.json,"...

Claude Mythos AI Finds 10,000 High-Severity Flaws in Widely Used Software

Anthropic on Friday disclosed that Project Glasswing has helped uncover more than 10,000 high- or critical-severity vulnerabilities across some of the most "systemically" important software across the world since the cybersecurity initiative went live last month. Project Glasswing is a defensive...

Laravel-Lang PHP Packages Compromised to Deliver Cross-Platform Credential Stealer

Cybersecurity researchers have flagged a fresh software supply chain attack campaign that has targeted multiple PHP packages belonging to Laravel-Lang to deliver a comprehensive credential-stealing framework. The affected packages include - laravel-lang/lang laravel-lang/http-statuses...

LiteSpeed cPanel Plugin CVE-2026-48172 Exploited to Run Scripts as Root

A maximum-severity security vulnerability impacting LiteSpeed User-End cPanel Plugin has come under active exploitation in the wild. The flaw, tracked as CVE-2026-48172 CVSS score: 10.0, relates to an instance of incorrect privilege assignment that an attacker could abuse to run arbitrary scripts...

Drupal Core SQL Injection Bug Actively Exploited, Added to CISA KEV

The U.S. Cybersecurity and Infrastructure Security Agency CISA has added a recently patched critical security flaw impacting Drupal Core to its Known Exploited Vulnerabilities KEV catalog, based on evidence of active exploitation. The vulnerability in question is CVE-2026-9082 CVSS score: 6.5, an...

First VPN Dismantled in Global Takedown Over Use by 25 Ransomware Groups

Authorities in Europe and North America have announced the dismantling of a criminal virtual private network VPN service used by criminal actors to obscure the origins of ransomware attacks, data theft, scanning, and denial-of-service attacks. Codenamed Operation Saffron, the disruption of First...

Ghostwriter Targets Ukraine Government Entities with Prometheus Phishing Malware

The Belarus-aligned threat actor known as Ghostwriter aka UAC-0057 and UNC1151 has been observed using lures related to Prometheus, a Ukrainian online learning platform, to target government organizations in the country. The activity, per the Computer Emergency Response Team of Ukraine CERT-UA,...

Megalodon GitHub Attack Targets 5,561 Repos with Malicious CI/CD Workflows

Cybersecurity researchers have disclosed details of a new automated campaign called Megalodon that has pushed 5,718 malicious commits to 5,561 GitHub repositories within a six-hour window. "Using throwaway accounts and forged author identities build-bot, auto-ci, ci-bot, pipeline-bot, the attacke...

Making Vulnerable Drivers Exploitable Without Hardware - The BYOVD Perspective

1 Introduction This article provides a technical analysis of how many Windows kernel mode drivers can be interacted with from user mode without the hardware they were developed for. This work was motivated by driver-oriented vulnerability research and the need to evaluate the exploitability of...

Kimwolf DDoS Botnet Operator Arrested in Canada Over DDoS-for-Hire Attacks

The U.S. Department of Justice DoJ on Thursday announced the arrest of a Canadian man in connection with allegedly operating a distributed denial-of-service DDoS botnet known as Kimwolf. In tandem, Jacob Butler aka Dort, 23, Ottawa, Canada, has been charged with offenses related to the developmen...

CISA Adds Exploited Langflow and Trend Micro Apex One Vulnerabilities to KEV

The U.S. Cybersecurity and Infrastructure Security Agency CISA on Thursday added two security flaws impacting Langflow and Trend Micro Apex One to its Known Exploited Vulnerabilities KEV catalog, citing evidence of active exploitation. The vulnerabilities in question are listed below -...

Cisco Patches CVSS 10.0 Secure Workload REST API Flaw Enabling Data Access

Cisco has rolled out updates for a maximum-severity security flaw impacting Secure Workload that could allow an unauthenticated, remote attacker to access sensitive data. Tracked as CVE-2026-20223 CVSS score: 10.0, the vulnerability arises from insufficient validation and authentication when...

Showboat Linux Malware Hits Middle East Telecom with SOCKS5 Proxy Backdoor

Cybersecurity researchers have disclosed details of a new Linux malware dubbed Showboat that has been put to use in a campaign targeting a telecommunications provider in the Middle East since at least mid-2022. "Showboat is a modular post-exploitation framework designed for Linux systems, capable...

ThreatsDay Bulletin: Linux Rootkits, Router 0-Day, AI Intrusions, Scam Kits and 25 New Stories

This week starts small. A token leaks. A bad package slips in. A login trick works. An old tool shows up again. At first, it feels like the usual mess. Then you see the pattern: attackers are not always breaking in. They are using the parts we already trust. That is what makes it worrying. The...

Microsoft Warns of Two Actively Exploited Defender Vulnerabilities

Microsoft has disclosed that a privilege escalation and a denial-of-service flaw in Defender has come under active exploitation in the wild. The former, tracked as CVE-2026-41091 , is rated 7.8 on the CVSS scoring system. Successful exploitation of the flaw could allow an attacker to gain SYSTEM...

When Identity is the Attack Path

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...

9-Year-Old Linux Kernel Flaw Enables Root Command Execution on Major Distros

Cybersecurity researchers have disclosed details of a vulnerability in the Linux kernel that remained undetected for nine years. The vulnerability, tracked as CVE-2026-46333 CVSS score: 5.5, is a case of improper privilege management that could permit an unprivileged local user to disclose...

GitHub Internal Repositories Breached via Malicious Nx Console VS Code Extension

GitHub on Wednesday officially confirmed that the breach of its internal repositories was the result of a compromise of an employee device involving a poisoned version of the Nx Console Microsoft Visual Studio Code VS Code extension. The development comes as the Nx team revealed that the extensio...

Highly Critical Drupal Core Flaw Exposes PostgreSQL Sites to RCE Attacks

Drupal has released security updates for a "highly critical" security vulnerability in Drupal Core that could be exploited by attackers to achieve remote code execution, privilege escalation, or information disclosure. The vulnerability, now tracked as CVE-2026-9082, carries a CVSS score of 6.5 o...

Microsoft Open-Sources RAMPART and Clarity to Secure AI Agents During Development

Microsoft has unveiled two new open-source tools called RAMPART and Clarity to assist developers in better testing the security of artificial intelligence AI agents. RAMPART, short for Risk Assessment and Measurement Platform for Agentic Red Teaming, functions as a Pytest-native safety and securi...