This weekly threat intelligence bulletin covers multiple active ransomware campaigns, four critical vulnerabilities under active exploitation, and emerging AI-driven threats. Notable items include actively exploited RCE flaws in Oracle E-Business Suite and Progress Kemp LoadMaster, a Citrix NetScaler memory disclosure flaw exploited within 24 hours of disclosure, a North Korean supply-chain campaign (PolinRider) deploying 108 malicious packages, and a proof-of-concept browser-native ransomware generated by an LLM abusing Chrome's File System Access API.
LevelBlue GSOC has identified accelerating ValleyRAT campaigns delivered through fake installers and malicious emails targeting Chinese and Japanese-speaking users. The email-based attack chain uses DLL sideloading via a legitimate VLC executable to load a malicious DLL that downloads an RC4-encrypted, Donut-generated ValleyRAT payload, which is then injected into a suspended rundll32.exe process for fileless execution. The malware incorporates extensive anti-analysis checks (memory size, sleep timing, CPU count, VHD boot detection) and establishes persistence via registry Run keys.
An active multi-stage phishing campaign distributes AsyncRAT and Remcos RATs through weaponized Excel attachments targeting sales, procurement, and vendor management staff globally. The infection chain uses VBA macros to retrieve HTA payloads via URL shorteners and Cloudflare Workers, with final payloads hidden via PNG steganography and loaded filelessly into memory via .NET assembly loading. The campaign demonstrates high-volume, automated payload generation with consistent obfuscation patterns including Base64 encoding, character substitution, and string reversal.
UNK_DeadDrop is a likely North Korean threat actor conducting broad phishing campaigns targeting software developers with fake job offers and code review requests. The campaign delivers malicious GitHub/GitLab repositories that abuse VS Code and Cursor IDE task automation to silently execute cross-platform malware. Linux and macOS systems receive the Overlord Go RAT with custom credential and wallet theft modules, while Windows runs a fileless Node.js/Python pipeline inside the editor's Electron process. The malware exfiltrates cryptocurrency wallets, browser credentials, and OS keychain data to a hardcoded C&C server at 23.137.105.75:5173.
AI is not fundamentally changing adversary capabilities but is compressing attack timelines, lowering operational costs, and scaling existing tactics. Breakout times have dropped to an average of 29 minutes, with AI-enabled operations increasing 89% year-on-year. The most significant emerging threats are runtime-LLM malware (PROMPTSTEAL/LAMEHUG, QUIETVAULT) that query language models during execution, and agentic AI operations (GTG-1002) where AI agents conduct multi-stage intrusions with minimal human steering. Defenders face a dual pressure: faster attacks and an expanding attack surface from AI supply-chain dependencies.
Cofense Intelligence reports a strategic shift in phishing operations toward platform-aware delivery, where threat actors fingerprint victim devices via browser User-Agent strings and deliver OS-specific payloads from a single landing page. Windows users receive legitimate remote access tools like ConnectWise RAT or Itarian RAT repurposed as malware, while MacOS and Android users are redirected to credential phishing pages. The abuse of legitimate RATs evades signature-based detection, and platform-siloed security tools fail to correlate the campaign across operating systems, leaving organizations with an incomplete picture of the intrusion scope.
Recorded Future's Insikt Group evaluates Mexico's newly published 2025-2030 National Cybersecurity Plan, assessing it against the country's actual threat landscape from 2020-2026. Ransomware is the dominant threat with 223 documented incidents across 64 groups, while financial malware (Mispadu, Grandoreiro, Casabaneiro, Fenix botnet), state-sponsored espionage (TAG-141/FamousSparrow, TGR-STA-1030), hacktivism (Chronus Team, Guacamaya), and organized crime-linked money laundering via Chinese networks compound the risk. The 2026 FIFA World Cup will be an early operational test of Mexico's cyber resilience.
Huntress demonstrated that a standard Microsoft 365 user with no admin privileges can be escalated to Global Administrator in under six minutes by exploiting common identity misconfigurations — specifically, an over-privileged service account owning an enterprise application, lack of MFA enforcement, and standard users being permitted to access the Azure portal. Analysis of 12,000+ M365 tenants revealed that over 60% were missing at least half of recommended security controls, with MFA gaps, over-privileged accounts, and admin restriction failures being the most prevalent issues. The article argues that continuous, automated identity posture management is essential because configuration drift creates exploitable windows far shorter than the 24-hour scan cycles of traditional tools.
The upcoming MCP 2026-07-28 specification fundamentally reshapes the protocol's security model by moving to a stateless architecture, eliminating protocol-managed sessions, and mandating OAuth 2.1 with PKCE. While this removes historical attack vectors like session hijacking and unsolicited server prompts, it introduces new risks: client-controlled state objects and tracking IDs enable cross-agent workflow hijacking, the _meta object allows metadata-based privilege escalation, new HTTP headers create desync and data leakage opportunities, MCP Apps bring stored XSS into AI interfaces, and asynchronous tasks introduce resource exhaustion DoS vectors. Security responsibility now rests squarely on MCP server developers and platform operators to implement cryptographic state verification, input validation, output encoding, and resource quotas.
AI Attacked and Abused While Perimeter Authentication Collapses
The month's defining shift was the emergence of AI as a two-sided battlefield: organizations deployed AI tools faster than they secured them, while attackers weaponized the same technology against defenders. Critical flaws in LangGraph allowed SQL injection chained to remote code execution, M365 Copilot could be turned into a one-click data exfiltration weapon via SearchLeak, and Langflow was exploited to deploy cryptominers. Meanwhile, the ongoing Shai-Hulud campaign injected prompts to blind AI malware scanners, macOS.Gaslight turned prompt injection against human analysts, and Russia's APT28 began experimenting with LLM-integrated malware. At the same time, perimeter authentication collapsed at scale: FortiBleed exposed credentials for over 73,000 FortiGate firewalls, CVE-2026-50751 let attackers bypass Check Point VPN authentication entirely, and ShinyHunters exploited an Oracle PeopleSoft zero-day across over 100 organizations.
Supply chain attackers followed developers to their new AI tools, compromising the ecosystems where code is written and built. The Shai-Hulud/Miasma worm expanded from npm into PyPI and injected persistent backdoors into AI coding assistant configurations, while North Korea's Sapphire Sleet compromised over 140 Mastra npm packages to steal cryptocurrency wallets, and the ongoing GlassWorm campaign pivoted to WebAssembly malware in VS Code extensions using the Solana blockchain as command-and-control. Social engineering also industrialized: the ErrTraffic framework turned ClickFix deception into a Malware-as-a-Service operation with blockchain dead drops, and EvilTokens hid phishing flows inside browser-side encryption to defeat network scanners while hijacking Microsoft device-code authentication.
Organizations should treat AI deployments as untrusted perimeter assets—restrict their network access, audit third-party skills and extensions, and assume prompt-injection attacks will target both automated scanners and human analysts. Every internet-facing VPN, firewall, and edge appliance should be patched immediately, with credentials rotated and phishing-resistant MFA enforced, because perimeter authentication failures now cascade directly into internal network compromise.
The EvilTokens phishing kit utilizes browser-side AES-GCM decryption to conceal its malicious payload from static analysis tools. By abusing the Microsoft Device Code authentication flow, the kit tricks victims into authorizing attacker access to their Microsoft 365 accounts without directly harvesting credentials, creating a significant visibility gap for SOC teams.
This threat intelligence report highlights recent data breaches involving third-party vendors, emerging AI threat vectors such as prompt injection and WebSocket abuse, and active exploitation of critical vulnerabilities in Fortinet, Cisco, and Splunk products. Additionally, seasonal phishing campaigns targeting travelers and Amazon Prime members are surging alongside a cross-platform Rust-based crypto clipboard hijacker.
A sophisticated phishing campaign is leveraging highly personalized FIFA World Cup 2026 lures to deliver the evasive Voidrift malware. The attackers utilize extensive reconnaissance to embed target company logos into the email lures and host payloads on legitimate domains, successfully bypassing multiple prominent Secure Email Gateways.
The ThreatLabz 2026 Phishing and Initial Access Report highlights a shift towards highly targeted, AI-enabled phishing campaigns against the public sector. Despite a 20% overall drop in phishing volume, attackers are increasingly utilizing AI site builders, encrypted delivery channels, and AiTM/BiTM techniques to bypass traditional MFA and secure initial access.
A sophisticated multi-stage phishing campaign is spoofing the IRS and Elon Musk to lure victims into a fraudulent cryptocurrency initiative. The attack chain begins with an email offering a fake $5,000 tax refund, which redirects to a credential harvesting site that steals extensive PII, including government IDs and bank routing numbers. Victims are then funneled into a fake trading dashboard designed to facilitate direct financial fraud and continuous Bitcoin theft.
Perimeter Auth Collapse and AI-Driven Deception Shift the Battlefield
The security perimeter cracked open this week as critical authentication bypasses in Check Point VPNs, Ivanti Sentry, and Palo Alto GlobalProtect gave attackers a free pass into corporate networks, with Qilin ransomware already exploiting one to launch real attacks.
At the same time, AI became the year's most versatile weapon: criminals used ChatGPT and Claude brands as phishing lures, researchers proved AI email assistants will hand over corporate secrets to impersonators, and the Shai-Hulud campaign began injecting fake prompts to blind AI-powered security scanners.
Patch edge VPN appliances immediately, treat AI agents as high-risk insiders, and hunt for device-code authentication events that bypass normal credential checks.
An active Microsoft 365 phishing campaign is abusing the OAuth 2.0 Device Authorization Grant flow to achieve account takeover without stealing passwords. The attack utilizes ClickFix-style landing pages with Unicode obfuscation and tricks victims into authorizing an attacker-controlled device via legitimate Microsoft authentication portals, coordinating the flow via a 4-second beaconing mechanism.
The Zscaler ThreatLabz 2026 Phishing and Initial Access Report highlights a shift from high-volume phishing to highly targeted campaigns leveraging AI site builders and encrypted channels. Attackers are increasingly utilizing AiTM and BiTM techniques to bypass MFA, while conducting massive reconnaissance via cloud infrastructure to identify exposed entry points.
The 2026 FIFA World Cup presents a complex cyber-physical threat landscape, with cybercriminals already deploying thousands of fraudulent domains for credential harvesting and scams. State-sponsored groups like BlueDelta and Iranian-linked hacktivists are anticipated to leverage the event's global profile for targeted espionage, ransomware extortion, and politically motivated disruptive operations against sponsors, host cities, and attendees.
Varonis Threat Labs demonstrated that enterprise AI agents, specifically an OpenClaw deployment, are vulnerable to traditional phishing and social engineering techniques. In simulated attacks, the agent successfully identified technical phishing indicators like malicious OAuth flows but failed to recognize social context, resulting in the exfiltration of AWS credentials and sensitive CRM data to an external attacker.
Threat actors are leveraging short-form video platforms like TikTok and Instagram Reels to conduct social engineering campaigns. By posting fake tutorials for premium software and manipulating engagement algorithms, attackers trick users into executing malicious PowerShell commands that deploy Vidarstealer or direct them to fraudulent survey websites.
Threat actors are increasingly leveraging the hype around AI platforms like ChatGPT, Claude, and DeepSeek to conduct social engineering attacks. These campaigns utilize phishing, malvertising, and SEO poisoning to distribute infostealers such as Vidar or facilitate credential theft via adversary-in-the-middle (AiTM) infrastructure.
A recent phishing campaign impersonates Amazon security alerts to deliver a custom remote access trojan (RAT) dubbed HarborWatch Agent. The attack leverages the ClickFix technique, using a fake CAPTCHA page to socially engineer victims into manually executing a malicious PowerShell command via the Windows Run dialog. Once executed, the script downloads the RAT, which collects system information and communicates with a C2 infrastructure managed via a panel called Harbor Sentinel.
This threat intelligence report highlights active exploitation of critical vulnerabilities, including a Windows Netlogon RCE (CVE-2026-41089) and an Android Framework flaw. It also details significant data breaches affecting DentaQuest and the UN WFP, emerging AI-driven threats such as EDR evasion labs, a supply chain compromise of the Hola browser, and Iranian state-sponsored espionage operations utilizing Dutch hosting infrastructure.
Trojanized Build Pipelines and Blind-Spot Appliances Redefine the Perimeter
Attackers are bypassing traditional network defenses by compromising the tools developers use to build software and the AI assistants they rely on to write code. Campaigns like Mini Shai-Hulud and Miasma - The Spreading Blight flooded package registries with malicious code that steals cloud credentials and CI/CD tokens, while researchers proved that public AI agent skill marketplaces are completely ineffective at catching malicious add-ons.
Nation-state actors and cybercriminals are simultaneously shifting their focus to blind spots in corporate networks and trusted platforms. The VerdantBamboo group exploited firewalls to bypass conditional access, while UNC3753 used IT impersonation to trick law firm employees into installing remote access tools, and Kali365 expanded its phishing infrastructure to steal multi-factor authentication tokens.
Defenders must shift their focus from perimeter email filtering to securing the software build pipeline and monitoring edge appliances for anomalous traffic. Hunt for unexpected connections to cloud storage APIs and review developer environments for compromised packages or AI skills.
The 2026 FIFA World Cup faces a multifaceted threat landscape encompassing cybercriminal fraud, state-sponsored espionage, and physical security risks. Financially motivated actors are actively deploying purchase scams and fake domains to harvest payment card data, while state-aligned groups from Iran, Russia, and China are expected to target telecommunications, logistics, and VIP attendees for intelligence collection and potential disruption.
Threat actors are weaponizing legitimate online services, such as Zoom, by embedding malicious links and phone numbers into arbitrary text fields like usernames and meeting descriptions. By triggering automated emails from these services and forwarding them to victims, attackers successfully bypass traditional email security protocols (SPF, DKIM, DMARC) and Secure Email Gateways.
JS.MonoGlyphRAT is a newly identified, highly obfuscated JavaScript backdoor targeting US enterprises via phishing. It establishes persistence, communicates over HTTP using custom headers, and acts as a loader capable of executing AES-encrypted payloads, PowerShell commands, and in-memory .NET assemblies while bypassing AMSI.
This threat intelligence bulletin highlights a surge in data breaches driven by social engineering, alongside the increasing weaponization of AI tools for phishing, malware development, and supply chain attacks. Active exploitation of vulnerabilities in PAN-OS GlobalProtect and Ghost CMS has been observed, while a critical unpatched RCE in Gogs remains a significant risk. Additionally, targeted campaigns like Grandoreiro and JINX-0164 continue to threaten the financial and cryptocurrency sectors using platform-specific malware and DLL side-loading.
Session Hijacking and Developer Tool Poisoning Collapse Authentication Trust
This week, attackers proved that multi-factor authentication is no longer a reliable gatekeeper. Campaigns like Tycoon 2FA and Chinese-language PhaaS platforms intercept one-time passwords in real time and steal session tokens to maintain persistent access, while infostealers like EKZ Infostealer harvest browser cookies to bypass authentication entirely. Even when victims reset passwords and revoke sessions, attackers retain access through hidden device registrations — meaning standard incident response playbooks are now incomplete.
Developers remain the preferred entry point for supply chain compromise. The Glassworm botnet was disrupted after hiding malware in VSCode extensions and npm packages, while the Megalodon campaign poisoned GitHub Actions workflows across 5,500 repositories. A malicious Sicoob.Sdk NuGet package stole banking certificates from Brazilian developers, and North Korea's Lazarus group compromised the widely used axios npm library — a single attack touching millions of downstream applications.
Organizations must move beyond password-and-MFA reliance: adopt hardware security keys, shorten session lifetimes, delete attacker-registered devices before resetting credentials, and audit developer toolchains and CI/CD pipelines for tampering.
ESET's Q4 2025–Q1 2026 APT Activity Report highlights global espionage and destructive campaigns by state-aligned actors. Notable incidents include a major supply chain compromise of the 'axios' npm library by Lazarus, destructive wiper attacks on Polish critical infrastructure by Sandworm, and the deployment of new edge-device implants like PhiliKit against Ivanti VPNs by China-aligned groups.
The 2026 FIFA World Cup presents a massive, multi-jurisdictional attack surface threatened by state-nexus disruptive operations and financially motivated cybercrime. Key risks include Iran-aligned actors targeting municipal OT infrastructure, pro-Russian hacktivists launching high-volume DDoS attacks against tournament services, and cybercriminals deploying ransomware against the hospitality supply chain.
Cybercriminals are shifting from traditional credential theft to session hijacking using infostealer malware, allowing them to bypass multi-factor authentication (MFA). By harvesting and replaying valid session tokens using automated tools, attackers gain rapid, stealthy access to corporate environments, which is then often monetized by Initial Access Brokers.
Tycoon 2FA is a prolific Phishing-as-a-Service (PhaaS) platform utilizing Adversary-in-the-Middle (AiTM) techniques to bypass MFA and steal session tokens across Microsoft 365 and Google Workspace. The kit employs sophisticated evasion tactics, automated post-compromise reconnaissance, and establishes durable persistence mechanisms, such as Device-PRT in Entra ID, which survive standard session revocation procedures.
In May 2026, ANY.RUN observed a surge in sophisticated phishing and malware campaigns utilizing fileless execution, browser-based credential theft, and legitimate workflow abuse. Key threats included Agent Tesla credential harvesting, ClickFix fileless malware, BlobPhish in-memory page generation, and phishing-to-RMM chains bypassing traditional MFA via real-time OTP interception.
This threat intelligence report highlights multiple high-profile breaches, including 7-Eleven and GitHub, alongside the active exploitation of vulnerabilities in Windows Defender, Trend Micro, and Drupal. It also details emerging threats such as the Kali365 phishing kit, AI-driven prompt injection attacks, the Nimbus Manticore IRGC-linked campaign deploying the MiniFast backdoor, and a supply chain attack on Laravel Lang packages.
This threat intelligence report highlights a surge in ransomware activity, critical zero-day vulnerabilities in Windows, and the active exploitation of Cisco Catalyst SD-WAN controllers. Additionally, it details emerging AI-driven threats, including malicious Hugging Face repositories and the abuse of AI website generators for phishing, alongside an APT intrusion by FamousSparrow targeting the energy sector.
Modern social engineering attacks have evolved to closely mimic legitimate business workflows, utilizing techniques like ClickFix, OAuth device code abuse, and in-browser blob phishing. These tactics bypass traditional security controls and create "gray-zone" alerts that require deep behavioral analysis to determine the true scope of compromise, such as credential theft, token abuse, or RMM deployment.
Iranian threat actor Nimbus Manticore (UNC1549) conducted a series of campaigns in early 2026 utilizing AppDomain Hijacking, SEO poisoning, and task hijacking to deploy the new MiniFast backdoor. The group demonstrated rapid toolset evolution, likely aided by AI-assisted development, targeting the aviation and software sectors across the US, Europe, and the Middle East.
The Cloud Atlas APT group has updated its toolset in 2025-2026 campaigns targeting Russia and Belarus, utilizing LNK-based phishing to deploy VBCloud and PowerShower backdoors. The group establishes persistent access by patching termsrv.dll for concurrent RDP sessions and heavily relies on reverse SSH, RevSocks, and Tor for redundant C2 channels. Additionally, a new PowerShell tool named PowerCloud is used to exfiltrate administrator data to Google Sheets.
Threat actors are leveraging image steganography hosted on legitimate file-sharing platforms to deliver remote access trojans and information stealers. The attack chain utilizes a JavaScript dropper to extract a Base64-encoded DotNET loader from a seemingly benign image, which then injects the final payload into memory to evade endpoint detection.
A recent phishing campaign impersonates Zoom meeting invitations to trick users into downloading a malicious VBS script disguised as a software update. This script silently installs ConnectWise ScreenConnect, a legitimate RMM tool, granting attackers persistent remote access to the compromised system for potential follow-on attacks such as credential theft, lateral movement, or ransomware deployment.
Infoblox Threat Intel uncovered a thriving underground economy on Telegram dedicated to unlocking stolen iPhones. Threat actors utilize specialized Windows binaries to extract device information and deploy targeted smishing campaigns via Apple lookalike domains to steal iCloud credentials, allowing them to bypass Activation Lock, wipe the device, and resell the hardware.
An 18-month Agent Tesla campaign is targeting LATAM enterprises, particularly in Chile, using procurement-themed phishing lures. The attack chain employs a multi-stage loader protected by .NET Reactor 6.x, utilizing process hollowing into aspnet_compiler.exe to execute the credential-stealing payload entirely in memory. Stolen data is exfiltrated via cleartext FTP to compromised legitimate infrastructure.
This article provides a comprehensive overview of 14 common payment fraud tactics, including phishing, account takeover, and wire transfer fraud, highlighting the projected $362 billion in global losses by 2028. It emphasizes the need for organizations, particularly in e-commerce and finance, to implement layered defenses such as PCI compliance, 3D Secure authentication, and machine learning-based anomaly detection to mitigate financial and reputational damage.
Threat actors are increasingly leveraging Vercel's GenAI capabilities, specifically v0.dev, to rapidly generate and host highly convincing credential phishing pages. By combining AI-generated frontends with Telegram Bot API integrations for real-time credential exfiltration, attackers can deploy resilient, low-effort phishing infrastructure on legitimate cloud services that evades traditional detection mechanisms.
A large-scale phishing campaign is targeting U.S. organizations across multiple sectors using fake event invitations. The campaign employs a repeatable infrastructure to bypass initial defenses via CAPTCHA, subsequently leading to either credential and OTP interception or the deployment of legitimate Remote Monitoring and Management (RMM) tools for persistent access.
Quasar Linux (QLNX) is an advanced, previously undocumented Linux Remote Access Trojan (RAT) designed to compromise developer workstations and facilitate supply chain attacks. It employs sophisticated evasion techniques, including fileless execution, process name spoofing, and dynamically compiled LD_PRELOAD and eBPF rootkits, alongside a PAM backdoor to harvest critical cloud and repository credentials.
Attackers are weaponizing Amazon Simple Email Service (SES) using compromised AWS IAM keys to launch highly convincing phishing and Business Email Compromise (BEC) campaigns. Because the emails originate from legitimate Amazon infrastructure, they successfully pass standard authentication protocols like SPF, DKIM, and DMARC, making detection difficult without disrupting legitimate business workflows.
