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DHS Secretary Markwayne Mullin pinpoints optimal CISA staffing levels

Department of Homeland Security Secretary Markwayne Mullin told Congress Wednesday that the Cybersecurity and Infrastructure Security Agency would ideally have 2,800 personnel, up from approximately 2,200 now and down from 3,400 before the second Trump administration began. President Donald Trump has pushed to dramatically reduce personnel numbers at the agency, something that has drawn criticism…

Google DoubleClick Abused in New Malspam Campaign to Deliver DesckVB RAT

Cybersecurity researchers have flagged a new malspam campaign that makes use of Google’s DoubleClick domain as a way to evade detection and ultimately deliver a remote access trojan (RAT) named DesckVB RAT. “Before the victim ever reaches attacker-controlled infrastructure, the lure routes through DoubleClick, a legitimate Google-owned domain that many security tools are less likely…

Unpatched Windows Search URI Vulnerability Lets Attackers Steal NTLMv2 Hashes

Cybersecurity researchers have disclosed details of an unpatched issue that could be exploited to disclose a user’s NTLMv2 hash to the attacker. Like in the case of CVE-2026-33829, which impacted the Windows Snipping Tool’s ms-screensketch: URI handler, the newly flagged issue resides in the search: URI handler, per Huntress. CVE-2026-33829 refers to a spoofing vulnerability…

New HTTP/2 Bomb Vulnerability Allows Remote DoS on NGINX, Apache, IIS, Envoy & Cloudflare

Cybersecurity researchers have discovered a remote denial-of-service exploit that affects major web servers, including NGINX, Apache HTTPD, Microsoft IIS, Envoy, and Cloudflare Pingora. The vulnerability has been codenamed HTTP/2 Bomb by Calif. “The vulnerable behavior exists in each server’s default HTTP/2 configuration,” the company said, adding it was discovered by OpenAI Codex by chaining

MazeBolt brings AI-generated attack simulation to DDoS security testing

MazeBolt has announced the launch of RADAR VectorAI, a new MazeBolt module that creates AI-generated DDoS attacks. As AI outpaces human response, enterprises need to have access to validated DDoS vulnerability data about both known and AI-generated attack vectors. Mythos has raised awareness of the cybersecurity risks created by AI. But while Mythos makes it…

Why an HP Poly VoIP Phones Bug Could Become an Enterprise Foothold

Rapid7 details a critical unauthenticated overflow in HP Poly VoIP phones that can lead to root RCE, with patches available for affected models. Rapid7’s latest disclosure on CVE-2026-0826 should get serious attention from anyone running HP Poly VoIP phones in an enterprise setting. It’s a critical unauthenticated stack-based buffer overflow that can give a remote…

Anthropic grants Project Glasswing access to 150 more companies, with a focus on critical infrastructure

Anthropic on Tuesday announced that it was adding 150 more companies to its Project Glasswing AI-based vulnerability hunting initiative, with a particular focus on critical infrastructure companies including those involved in “power, water, healthcare, communications and hardware.” Analysts and security vendors agreed that the move is a positive step, noting that the more companies involved…

News alert: Halo Security recognized for helping MSPs manage customers’ external attack surfaces

MIAMI BEACH, Fla., June 2, 2026, CyberNewswire—Halo Security today announced that its attack surface management solution has been named a 2026 MSP Today Product of the Year Award winner by TMC, a leading global media company recognized for building communities in technology and business through live events and digital marketing platforms. This marks the second…

Google Patches Android Zero-Day Under Active Exploitation 

Google has patched a high-severity Android zero-day vulnerability that attackers have already exploited in the wild.  The issue affects multiple Android releases and serves as a reminder that mobile operating systems remain a valuable target for threat actors seeking access to sensitive enterprise and personal data.  “There are indications that CVE-2025-48595 may be under limited,…

Attackers exploit Palo Alto GlobalProtect flaw days after disclosure

A Palo Alto Networks vulnerability that allows attackers to establish unauthorized VPN access into corporate networks is being actively exploited in the wild, weeks after the company disclosed the flaw as a medium-severity issue and said it was unaware of any attacks. However, according to Rapid7, threat actors began exploiting the bug within days of…

How Leading Organizations Are Turning EDR Into Operational Resilience

Most organizations now recognize that endpoint protection alone is no longer sufficient. That’s why adoption of endpoint detection and response (EDR) has accelerated rapidly in recent years. Organizations understand that modern attacks move faster, evade traditional prevention controls, and require continuous visibility into suspicious activity across the environment. But owning EDR

Dashlane Discloses Brute-Force Attack, Encrypted Vaults of Fewer Than 20 Users Downloaded

Password manager Dashlane has disclosed that “fewer than” 20 users on the personal subscription plan had their encrypted vaults downloaded following a brute-force attack launched by an unknown party. On May 31, 2026, the company said an “external” threat actor launched a brute-force attack against certain Dashlane user accounts with the aim of breaking two-factor…

Spring 2026 SOC 1, 2, and 3 reports are now available with 188 services in scope

Amazon Web Services (AWS) is pleased to announce that the Spring 2026 System and Organization Controls (SOC) 1, 2, and 3 reports are now available. The reports cover 188 services over the 12-month period from April 1, 2025–March 31, 2026, giving customers a full year of assurance. These reports demonstrate our continuous commitment to adhering…

Windows Netlogon RCE exploited, domain controllers at risk (CVE-2026-41089)

CVE-2026-41089, a critical Windows Netlogon RCE flaw that allows remote code execution, is now actively exploited in the wild, the Centre for Cybersecurity Belgium (CCB) warned on Friday. About CVE-2026-41089 CVE-2026-41089 is a stack-based buffer overflow vulnerability in Windows Netlogon, the service and protocol that handles authentication and security within a Windows domain environment. The…

Brute-force attack triggers Dashlane account lockouts

Password manager Dashlane has confirmed that a brute-force attack targeting user accounts triggered temporary account suspensions and authentication issues. The company first acknowledged the incident on May 31 after users reported receiving account suspension emails and experiencing login problems. “Your account has been temporarily suspended for security reasons as someone has attempted to register a…

PathSolutions brings on-premises AI troubleshooting to NetOps teams

PathSolutions has announced the launch of TotalView AI, a new capability within its TotalView platform that provides AI-driven troubleshooting for NetOps teams using network data analyzed on-premises. As enterprise networks become more distributed and complex, NetOps teams face increasing pressure to resolve issues quickly, often without the benefit of deep domain expertise. At the same…

Cato cuts vulnerability protection time to 45 minutes with agentic threat research

Cato Networks announced a new capability that reduces time-to-protect for newly disclosed vulnerabilities to 45 minutes. The company attributes this reduction to the use of agentic threat research designed to accelerate protection against emerging exploits. Traditional appliance-based security depends on a slow customer-operated patching cycle: vendors develop protections, customers receive updates, teams test them, and…

Horizon3.ai introduces Rapid Response to prioritize and verify vulnerability remediation

Horizon3.ai has introduced Rapid Response, a capability that helps organizations assess exposure to newly disclosed threats, prioritize remediation, and verify that vulnerabilities have been addressed. Security teams are inundated with vulnerability disclosures, threat intelligence feeds, exploit chatter, and vendor advisories, all demanding immediate attention. While tens of thousands of new vulnerabilities are disclosed each year,…

Election threats are focused on campaign systems, not voting machines

Cybersecurity threats to the 2026 midterm elections are targeting the accounts and platforms that campaigns, donors and voters use to communicate, according to a security report released Monday by Check Point Software Technologies. So far in this election cycle, threats are not aimed at voting machines or ballot-counting systems. Instead, threat actors are going after…

Hackers are exploiting Palo Alto GlobalProtect VPN authentication bypass (CVE-2026-0257)

Authentication bypass vulnerabilities (CVE-2026-0257) in Palo Alto Networks’ firewalls that the company disclosed on May 13 have been targeted in “limited exploit attempts”. “Across multiple customers, Rapid7 observed successful exploitation via authentication probes using forged cookies, but the appliance accepted the cookie without a full VPN session being established in 8 out of 10 impacted…

6 critical security gaps every CISO must address

CISOs acknowledge that no organization is completely safe, but many also admit their security measures aren’t where they’d like them to be. One-third of CISOs surveyed for Proofpoint’s 2025 Voice of the CISO Report said the data within their organization is not adequately protected, and 58% said their organizations were unprepared to respond to a…

Unidentified RAT pushes NetSupport RAT, (Mon, Jun 1st)

Introduction This diary provides indicators from an unidentified RAT infection on Wednesday 2026-05-27 that was followed by a malicious NetSupport Manager RAT package. This originated from the SmartApeSG ClickFix campaign. I still don’t know the name of the initial RAT, but it has consistently been generating encoded (not HTTPS/SSL/TLS) traffic to a command and control…

Dutch Authorities Dismantle Botnet Linked to 17 Million Infected Devices

Dutch authorities have announced the takedown of a botnet that enslaved millions of infected devices, including computers, tablets, smartphones, and IoT devices, to carry out malicious attacks. The bot network, per the Dutch Politie and the National Cyber Security Center (NCSC), consisted of at least 17 million infected devices. More than 200 servers located in…

PAN-OS GlobalProtect Authentication Bypass (CVE-2026-0257) Under Active Exploitation

Palo Alto Networks has warned that a recently disclosed medium-severity security flaw impacting PAN-OS and Prisma Access has come under active exploitation in the wild. The vulnerability, tracked as CVE-2026-0257 (CVSS score: 7.8), refers to a case of authentication bypass that could be exploited by bad actors to set up VPN connections. “Authentication bypass vulnerabilities…

Russia-aligned crime group Greyvibe extensively uses AI in attacks

Researchers have uncovered a previously undocumented Russian group that makes extensive use of large language models (LLMs) in its attacks against private, government, and military organizations in Ukraine. It uses a variety of attack vectors along with custom malware, with the goal of intelligence gathering for the ongoing war. Dubbed Greyvibe by researchers from WithSecure,…

ChatGPhish Vulnerability Turns ChatGPT Web Summaries Into a Phishing Surface

Cybersecurity researchers have disclosed details of a vulnerability in OpenAI ChatGPT that leverages the artificial intelligence (AI) assistant’s implicit trust in Markdown links and images to trigger prompt injections and open the door to phishing attacks. The technique has been codenamed ChatGPhish by Permiso Security. “The chatgpt.com response renderer trusts Markdown links and Markdown

Federal audit reveals NIST’s NVD is plagued by poor planning and duplication

A Department of Commerce inspector general report released Thursday found that the National Institute of Standards and Technology has mismanaged a critical cybersecurity vulnerability database through poor planning, inefficient operations, duplicate federal programs, and failure to communicate with users. The National Vulnerability Database, maintained by NIST since 2005, collects information about computer security flaws and…

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” contain functionality to exfiltrate sensitive information, including PFX certificates that are used to

IBM and Red Hat want to become the ‘security clearinghouse’ for open source applications in the enterprise

Open source code is everywhere in the enterprise; it’s estimated that upwards of 90% of Fortune 500 companies have it in their software supply chains. But open source code is notoriously rife with vulnerabilities, and identifying and patching those bugs can be an endless battle for security teams. IBM and Red Hat are betting that…

Simplifying policy management with URL and Domain Category filtering on AWS Network Firewall

Network administrators face a persistent challenge: maintaining domain blocklists and allowlists that keep pace with the internet. New websites and services emerge daily, and keeping these lists current requires constant manual updates that leave gaps in coverage. This challenge intensifies when managing access to rapidly evolving categories like AI services, where new tools launch on…

Multi-Turn Attacks Expose Ongoing Weaknesses Across Frontier AI Models

A Cisco evaluation of frontier LLMs found that no tested model consistently resisted multi-turn adversarial attacks, raising concerns about current AI safety assessments.  The research suggests that many widely used AI safety benchmarks may underestimate real-world risk because they focus primarily on single-turn prompt evaluations rather than adaptive, iterative attacks. Key Takeaways from Cisco’s Research…

Browser Threats Expand Across Enterprise Networks 

A NordLayer report warns that browsers have become the primary workplace interface, increasing exposure to credential theft, phishing, malware, and session hijacking attacks.   The study found that 100% of the 504 analyzed workplace applications supported browser access, while 78.8% were entirely browser-based. According to the report, browser-related incidents are now widespread across organizations.  The report…

Resecurity Supports Microsoft DCU in Disrupting Fox Tempest ’s Cybercriminal Code-Signing Ecosystem

Microsoft and Resecurity disrupted Fox Tempest, a malware-signing service that used fake Microsoft certificates to make malware look legitimate. Resecurity supported Microsoft’s Digital Crimes Unit (DCU) in its disruption of Fox Tempest, a financially motivated threat actor operating a malware-signing-as-a-service (MSaaS) capability used by cybercriminals to make malicious files appear legitimate. On May 19, 2026,…

Hottest cybersecurity open-source tools of the month: May 2026

Presented here is a curated selection of noteworthy open-source cybersecurity solutions that have drawn recognition for their ability to enhance security postures across diverse settings. Pipelock: Open-source AI agent firewall AI coding agents run with shell access, environment variables containing API keys, and unrestricted internet connectivity, creating a single point of failure where one compromised…

Canonical releases Workshop for one-command sandboxed dev environments on Ubuntu

Canonical released Workshop, a tool that launches sandboxed development environments on Ubuntu with a single command. Environments are configured once and reproduced on different machines, giving teams consistent setups across development workstations and deployment pipelines. A terminal showing the output of the workshop launch and list commands (Source: Canonical) How Workshop defines environments Workshop environments…

UK spy chief labels AI ‘unstoppable force’ with offensive, defensive ramifications for cyberspace

Artificial intelligence is an “unstoppable force” that allows tech to be “weaponized just below the threshold of traditional warfare,” including in cyberspace, the head of a U.K. intelligence, security and cybersecurity agency said Wednesday. We live in a world “where the latest frontier AI is rapidly unearthing fault lines in technologies our society relies on…

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 to single out companies in Spain, Portugal, and Mexico, as…

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 Anthropic’s Claude artificial intelligence (AI) tool to handle uploads and outputs in the background. The

Google AI Threat Defense targets attackers using AI to find flaws faster

Google Cloud introduced AI Threat Defense, an automated cybersecurity platform that combines several of the company’s security assets to find, prioritize, and patch software vulnerabilities at machine speed. The product is aimed at enterprises contending with attackers who use AI to discover and exploit flaws in hours or days, compressing windows that once stretched into…

Ping Identity advances agentic security with AI governance and trusted access

Ping Identity announced new capabilities that extend the Ping Identity Platform for the agentic enterprise, where AI agents, automation, and developers increasingly shape how access is managed, governed, and secured across organizations. AI agents are changing both sides of the identity equation. They are new actors that need to be discovered, governed, and managed across…

Fake ChatGPT and Claude installers on GitHub are dropping Deno RAT malware

Attackers are hosting counterfeit installers and plugins on GitHub and SourceForge that pose as widely used software, including ChatGPT, Claude, AutoTune, Kontakt, Ableton Live, and ZENOLOGY. The downloads deliver a backdoor called DinDoor, which then loads a remote access Trojan built on the Deno JavaScript runtime, according to Malwarebytes. Compromised YouTube channels push victims toward…

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 visibility of malicious software recommendations,” Microsoft Defender Experts and the Microsoft

Vigolium: Open-source vulnerability scanner

Vigolium, an open-source vulnerability scanner that combines deterministic scanning with AI-driven auditing, launched its initial open-source release this month. The project ships 235+ scanner modules and an in-process agent runtime called olium that handles autonomous endpoint discovery, attack planning, and finding triage. The tool exposes two scanning paths. vigolium scan runs a multi-phase deterministic pipeline…

CrowdStrike Disrupts Glassworm Supply Chain Botnet 

CrowdStrike announced the coordinated takedown of the Glassworm botnet, a large-scale operation that targeted software developers through compromised open-source packages, malicious VSCode extensions, and poisoned GitHub repositories.  The operation, conducted alongside Google and the Shadowserver Foundation, disrupted the botnet’s infrastructure and severed communication between the operators and infected systems. “In collaboration with Google and the…

The Hidden Ransomware Economy Running on Exposed Databases

A 5-year study on the Ransomware Economy found that 30,515 exposed databases were hit by ransom attacks, causing massive damage despite victims never paying. Database extortion doesn’t look like the ransomware stories that usually grab headlines. There’s no slick branding, no leak-site countdown, no gang posting memes on Telegram. In most cases, there’s just a…

ConnectWise Automate Vulnerability Could Allow Security Check Bypass and RCE

ConnectWise has disclosed a vulnerability in its Automate remote monitoring and management (RMM) platform that could allow attackers to bypass integrity verification mechanisms and execute malicious code in affected environments.  The flaw impacts on-premises versions of ConnectWise Automate prior to version 2026.5 and carries a CVSS score of 8.8. “Under certain conditions, components obtained during…

Detectify brings AppSec automation to AI agents with MCP Server and continuous testing

Detectify has unveiled the Detectify MCP (Model Context Protocol) Server, a new integration layer that brings Detectify’s security testing engines directly into AI-driven development workflows, helping coding agents find and validate exploitable vulnerabilities and interpret attack surface data with greater precision. As organizations increasingly rely on AI agents to write, refactor, and modernize code, software…

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 assigned an important severity. “Deserialization of untrusted data in Microsoft…

Tamnoon introduces skill-based AI orchestration for autonomous cloud defense

Tamnoon has expanded its AI engine, Tami, into a skill-based orchestrator that generates customer-specific remediation skills tailored to each enterprise environment. Trained on more than 6 million real cloud fixes across 800+ accounts, Tami coordinates specialized AI skills to safely and autonomously address every class of cloud risk. Two new skills are available, Remediation Confidence…

Lazarus APT unveils fileless remote access Trojan designed to evade detection

North Korea-linked Lazarus APT Group is using a stealthy memory-only RAT that leaves almost no forensic traces behind. North Korea-linked APT group Lazarus has never been shy about its ambitions, the threat actor has been tied to some of the most audacious financial heists in recent memory, draining hundreds of millions from cryptocurrency exchanges and…

Possible ACR Stealer From Page Impersonating Claude, (Tue, May 26th)

Introduction In recent weeks, I’ve searched for pages impersonating Claude that distribute malware. In recent weeks, I’ve reliably found these sites through malicious ads in Google searches that lead to these pages, often concealed in URLs for sites.google[.]com, such as this example from 2026-05-11. These fake Claude pages generally show instructions for macOS malware when…

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…