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Authorities seize 800 servers used for cyberattacks and disinformation

Dutch authorities arrested two men and seized 800 servers linked to a hosting provider that investigators say supported Russian activities aimed at undermining democracy and security through cyberattacks, disinformation, and disruption of public and economic systems. Servers seized by Dutch authorities (Source: FIOD) The Dutch Fiscal Information and Investigation Service (FIOD) arrested a 57-year-old man…

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 that involves two loaders tracked as DPAPILoader and RemotePELoader. “DPAPILoader decrypts and

Weekly Update 505

Well, that didn’t last long! Recording this on Saturday morning my time, I observed ShinyHunters having gone quiet since the massive haul that would have been the Instructure ransom. It was two weeks almost to the hour since I’d first heard rumour of payment being made, and I posited that groups like this often go…

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 an effort led by the artificial intelligence (AI) company, as part of which a small set…

Google leaks details for Chromium bug that can turn browsers into bots

Chromium — the open-source browser that underpins Google Chrome, Microsoft Edge, and Opera, among others — contains an unpatched vulnerability that attackers can exploit to execute JavaScript code persistently across browser restarts. As a result, the flaw can be used to hijack users’ browsers for distributed denial-of-service attacks, run crypto miners, and more. The vulnerability…

FBI warns about fast-growing phishing kit targeting Microsoft 365 users

The FBI is warning organizations and defenders about Kali365, a growing phishing-as-a-service platform that retrieves Microsoft 365 access tokens, issuing a public service announcement Thursday.  The toolkit bypasses multi-factor authentication and abuses OAuth device code authorizations via phishing lures impersonating common enterprise services. This technique grants cybercriminal-controlled applications access to Microsoft 365 accounts, opening victims…

AI-Driven Threats, Critical Vulnerabilities, and Supply Chain Breaches Define the Week in May 2026

Major Threats & Vulnerabilities AI-Powered Cyberattacks and Exploits The 2026 Verizon DBIR revealed that vulnerability exploitation has surpassed credential abuse as the leading breach vector, accounting for 31% of incidents. The report highlights how generative AI is accelerating attack automation and expanding third-party risk exposure, particularly among SMBs facing ransomware threats. Microsoft Defender vulnerabilities are…

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 attacker injected GitHub Actions workflows containing base64-encoded bash payloads that exfiltrate CI

CISA’s new KEV nomination form opens reporting to vendors and researchers

The Cybersecurity and Infrastructure Security Agency launched a new nomination form that lets researchers, vendors, and industry partners report known exploited vulnerabilities for possible inclusion in its KEV catalog. The form gives outside contributors a direct way to submit vulnerabilities to CISA. Email submissions remain available at vulnerability@cisa.dhs.gov for organizations and individuals who prefer that…

Cross-Platform NPM Stealer, (Fri, May 22nd)

I found a Node.js stealer that looked pretty well obfuscated. The file was not running out-of-the-box because it was uploaded on VT as “extracted-decoded.js” (and reformated). The SHA256 is 049300aa5dd774d6c984779a0570f59610399c71864b5d5c2605906db46ddeb9[1]. It did not run properly in a sandbox so only a static analysis was performed. The key point is that it is a cross-platform stealer…

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 accessing REST API endpoints. “An attacker could exploit this vulnerability if they are able to send

Unpatched ChromaDB flaw leaves servers open to remote code execution

Researchers have published details about a critical vulnerability in ChromaDB that could allow unauthenticated attackers to execute arbitrary code and access sensitive data on machines running the open-source vector database. The issue, tracked as CVE-2026-45829, is located in ChromaDB’s API server and was published by researchers at HiddenLayer after reportedly failing to get in contact…

Lawmakers from both parties say CISA cuts have gone too far

Two cybersecurity-focused members of Congress agreed Thursday that reductions to the Cybersecurity and Infrastructure Security Agency have done too much damage to an agency essential to defending civilian networks against foreign adversaries. Rep. Don Bacon, R-Neb., and Rep. James Walkinshaw, D-Va., spoke during a discussion at the National Cyber Innovation Forum. Despite representing different parties,…

AWS KY3P report now available for third-party supplier due diligence

We’re excited to announce that Amazon Web Services (AWS) has completed the S&P Global Know Your Third Party (KY3P) assessment of its security posture. This assessment demonstrates our continued commitment to meet the heightened expectations of cloud service providers. Customers can now use the AWS KY3P assessment to reduce their supplier due diligence burden. KY3P,…

CISA chief frets about open-source vulnerabilities, delayed security improvements

Securing some of the open-source technology that serves as the backbone for all modern digital infrastructure is going to require some “hard decisions” amid a wave of malware attacks, the leader of the Cybersecurity and Infrastructure Security Agency said Thursday. “The open-source community is one that I’m particularly worried about when we start to think…

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 of spawning a remote shell, transferring files, and functioning as a…

AI, Cybersecurity Education, and the Defense of America’s Digital Border

Artificial intelligence (AI) is reshaping cybersecurity at a pace that is forcing educators, businesses, and governments to rethink workforce development and national defense strategies.  During a recent discussion with cybersecurity entrepreneur and ConnectSecure Chairman, Arnie Bellini, key themes emerged around the evolution of cyber threats, the importance of protecting America’s “digital border,” and the urgent…

Cisco fixed maximum severity flaw CVE-2026-20223 in Secure Workload

Cisco fixed a critical Secure Workload flaw (CVE-2026-20223) that could let attackers gain Site Admin privileges through crafted API requests. Cisco released patches for a critical vulnerability, tracked as CVE-2026-20223 (CVSS score of 10.0), in Secure Workload. The flaw stems from insufficient validation and authentication in REST API endpoints. According to Cisco, remote attackers could…

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 privileges. “Improper link resolution before file access (‘link following’)…

ASAPP expands adversarial testing for enterprise AI systems

ASAPP has launches Continuous Red Teaming, a new capability that integrates adversarial AI testing directly into ASAPP’s model evaluation framework. The new capability is built on Promptfoo, an AI security platform that helps enterprises detect and address vulnerabilities in AI systems during development. Promptfoo continuously runs automated tests across ASAPP’s AI systems, screening for more…

Forward launches Predict to test network changes before deployment

Forward has unveiled Forward Predict, a new capability that allows organizations to evaluate the impact of network changes before deployment. By testing proposed changes against a digital twin of the production network, Forward Predict helps identify potential issues before they reach live environments and supports safer network operations at scale. “When we founded Forward more…

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 sensitive files and execute arbitrary commands as root on default installations of several…

Microsoft is working on a patch for ‘YellowKey’ attack on Bitlocker, offers temporary fix

Microsoft says it is considering a patch for a zero-day vulnerability, dubbed YellowKey, that allows attackers with access to a Windows device to bypass Bitlocker encryption protection and read and write files. The flaw was disclosed last week, and there is already a public proof of concept available. The company issued an advisory Tuesday saying…

Microsoft is working on a patch for ‘YellowKey’ attack on Bitlocker, offers temporary fix

Microsoft says it is considering a patch for a zero-day vulnerability, dubbed YellowKey, that allows attackers with access to a Windows device to bypass Bitlocker encryption protection and read and write files. The flaw was disclosed last week, and there is already a public proof of concept available. The company issued an advisory Tuesday saying…

Microsoft Disrupts Malware-Signing Service Used by Ransomware Gangs

Microsoft says it disrupted a malware-signing service that abused Azure Artifact Signing to create fraudulent certificates used in ransomware and malware attacks.  The Fox Tempest operation allegedly helped cybercriminals distribute malware disguised as trusted software to evade Windows defenses and fool users.   “Fox Tempest doesn’t directly target victims but instead provides supporting services that enable…

ISC2 Report: AI Is ‘Double-Edged’ Sword of Cybersecurity

A new study from ISC2 has found that cybersecurity professionals now see AI as both their biggest opportunity and biggest threat.  The findings point to a field at an inflection point, with teams moving to adopt AI for defense while preparing for more scalable, convincing AI-enabled attacks. AI ranks as top security opportunity and threat…

GitHub says internal repositories were taken in poisoned VS Code extension attack

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…

Microsoft Takes Down Malware-Signing Service Behind Ransomware Attacks

Microsoft on Tuesday said it disrupted a malware-signing-as-a-service (MSaaS) operation that weaponized the company’s Artifact Signing system to deliver malicious code and conduct ransomware and other attacks, compromising thousands of machines and networks across the world. The tech giant attributed the activity to a threat actor it calls Fox Tempest, which it said offered the…

TeamPCP breached GitHub’s internal codebase via poisoned VS Code extension

Following TeamPCP’s claim that they’ve breached GitHub’s own private code repositories, the Microsoft-owned company launched an investigation and confirmed the compromise. “Our current assessment is that the activity involved exfiltration of GitHub-internal repositories only. The attacker’s current claims of ~3,800 repositories are directionally consistent with our investigation so far,” GitHub stated. The source of the…

Microsoft provides mitigation for “YellowKey” BitLocker bypass flaw (CVE-2026-45585)

Microsoft is working on a fix for CVE-2026-45585 (aka “Yellowkey”), a vulnerability that can be used by attackers to bypass protections offered by BitLocker, the full-disk encryption feature built into Windows, and access users’ data. In the meantime, the company has provided step-by-step mitigation advice to protect affected Windows devices from exploitation. CVE-2026-45585 and the…

Microsoft dismantled malware-signing network Fox Tempest

Microsoft disrupted Fox Tempest, a malware-signing-as-a-service (MSaaS) that allowed attackers to sign malware with fake trusted certificates. Microsoft said it disrupted a cybercrime operation run by a threat actor named Fox Tempest, which helped threat actors sign malware with short-lived certificates to make malicious software appear legitimate. The service abused Microsoft Artifact Signing and supported…

Microsoft disrupts cybercrime service that abused software verification systems en masse

Microsoft seized infrastructure and disrupted a cybercrime service that created and sold more than 1,000 code-signing certificates that other cybercriminals used to make malware-riddled software appear trusted and legitimate for follow-on cyberattacks, including ransomware, the company said Tuesday. The financially-motivated threat group, which Microsoft tracks as Fox Tempest, provided the malware-signing-as-a-service to multiple ransomware groups,…

TrustedTech: Executives Drive Shadow AI Risk in Enterprises

TrustedTech has released new research indicating that senior leaders are among the biggest sources of shadow AI risk within organizations, with executives using unapproved AI tools at significantly higher rates than lower-level employees. The Irvine, California-based Microsoft cloud solutions and IT modernization provider said its global and U.S. data points to a growing gap between…

LaunchDarkly adds real-time controls for AI agents in production

LaunchDarkly has launched AgentControl, a new solution that gives software teams real-time control over AI agents in production. With AgentControl, teams can change how an agent behaves at runtime without redeploying the underlying application. As AI agents move into production, engineering teams need new ways to manage configuration, quality, and runtime behavior. Unlike traditional code,…

Compromised Nx Console 18.95.0 Targeted VS Code Developers with Credential Stealer

Cybersecurity researchers have flagged a compromised version of the Nx Console extension that was published to the Microsoft Visual Studio Code (VS Code) Marketplace. The extension in question is rwl.angular-console (version 18.95.0), a popular user interface and plugin for code editors like VS Code, Cursor, and JetBrains. The VS Code extension has more than 2.2…

Babel Street targets AI-driven threats with new agentic investigation capabilities

Babel Street has launched Insights Investigator, a new agentic capability that puts tradecraft-trained AI agents at the front edge of investigative work while ensuring analysts remain in control of scope, logic, and outcomes of their missions. As part of the Babel Street Insights platform, Investigator represents a shift from search and AI-assisted queries to analyst-directed,…

iProov brings identity verification to video meetings to reduce fraud risks

iProov has launched iProov Verified Meetings, a new solution that enables organizations to verify the identity of video call participants without adding friction to the user experience. Video meetings have become a trusted and scalable communication channel, but attackers are increasingly exploiting them through AI-generated deepfake and injection attacks, creating new fraud risks. Verified Meetings…

Grafana confirms GitHub token breach cybercrime group claims the attack

Grafana confirmed a GitHub token breach that exposed source code, but said no customer data or systems were affected. Grafana Labs confirmed a security incident after the extortion group Coinbase Cartel listed it on a leak site and claimed data theft on May 15. The breach was triggered by a compromised token that gave attackers…

AI cyberattackers are getting better faster

The ability of AI models to perform end-to-end, multi-stage penetration tests that match the capabilities of humans undertaking the same tasks has improved dramatically in recent months, according to new benchmarks published by the UK government’s AI Security Institute (AISI). In November 2025, the difficulty of cyber tasks the best models could complete was doubling…

New image-based prompt injection attack targets multimodal AI models

Security researchers have developed a new image-based prompt injection attack that can manipulate how multimodal AI systems interpret user instructions without modifying the original text prompt, potentially expanding security risks for AI agents and vision-language systems. In a research paper published this week, researchers from Xidian University described a technique called “CrossMPI,” which uses nearly…

Top 21 MSSP Software to Best Serve Security Clients in 2026

MSSP software is a tool or platform that enables managed security service providers (MSSPs) to deliver outsourced cybersecurity services to organizations. Unlike traditional MSP software, MSSP tools focus specifically on security functions such as threat detection, access control, vulnerability management, and infrastructure protection. MSSPs support organizations ranging from small businesses to enterprises and play a…

Ivanti, Fortinet, SAP, VMware, n8n Patch RCE, SQL Injection, Privilege Escalation Flaws

Ivanti, Fortinet, n8n, SAP, and VMware have released security fixes for various vulnerabilities that could be exploited by bad actors to bypass authentication and execute arbitrary code. Topping the list is a critical flaw impacting Ivanti Xtraction (CVE-2026-8043, CVSS score: 9.6) that could be exploited to achieve information disclosure or client-side attacks. “External control of…

Why the best security investment a board can make in 2026 isn’t another tool

There is a conversation that happens in boardrooms every quarter that security leaders will recognize. The CISO presents the threat landscape. The board asks what the company needs. The answer, almost always, is another tool. Another platform, another module, another vendor to close the latest gap. The budget gets approved. The tool gets deployed. And…

Pre-Stuxnet Fast16 Malware Tampered with Nuclear Weapons Simulations

A new analysis of the Lua-based fast16 malware has confirmed that it was a cyber sabotage tool designed to tamper with nuclear weapons testing simulations. According to Broadcom-owned Symantec and Carbon Black teams, the pre-Stuxnet tool was engineered to corrupt uranium-compression simulations that are central to nuclear weapon design. “Fast16’s hook engine is selectively interested…

Grafana GitHub Token Breach Led to Codebase Download and Extortion Attempt

Grafana has disclosed that an “unauthorized party” obtained a token that granted them the ability to access the company’s GitHub environment and download its codebase. “Our investigation has determined that no customer data or personal information was accessed during this incident, and we have found no evidence of impact to customer systems or operations,” Grafana…

CVE-2026-42897: Microsoft confirms active exploitation of Exchange Server zero-day

Microsoft warned that attackers are exploiting a new Exchange Server zero-day vulnerability, tracked as CVE-2026-42897, in the wild. Microsoft warned that threat actors are actively exploiting a new Exchange Server zero-day vulnerability tracked as CVE-2026-42897 (CVSS score 8.1). The vulnerability is an improper neutralization of input during web page generation (‘cross-site scripting’) in Microsoft Exchange…