The Gentlemen is a ransomware-as-a-service (RaaS) operation active since mid-2025, targeting Windows, Linux, NAS, and BSD systems. It uses a double-extortion approach by encrypting files with ChaCha20 encryption and exfiltrating data. The ransomware kills security processes via vulnerable drivers and spreads laterally using PsExec. A breach in May 2026 exposed internal communications and affiliate details. The group mainly targets organizations in the United States and Europe across various sectors including manufacturing, technology, healthcare, professional services, and retail.
Accenture, Dragos, and the SANS Institute have launched a $10 million initiative called the Community Cyber Resilience Foundation to help under-resourced small US utilities defend their operational technology (OT) environments. The first phase targets up to 500 water, electric, and natural gas utilities with annual revenues under $100 million, providing free security tools, equipment, deployment assistance, and training. The initiative aims to address challenges faced by small utilities such as limited funding, workforce shortages, and aging technology. Participants receive the Dragos Platform and related services, with Accenture managing setup and support, and SANS providing ICS/OT security training. This effort builds on Dragos's existing Community Defense Program and responds to recent attacks on US water systems. The program is intended to improve cyber resilience in critical infrastructure sectors serving millions of Americans.
Midnight Mimosa is a widespread Android malware campaign involving malicious applications preinstalled in the firmware of low-cost MediaTek-based devices. It affects over 150 countries, with highest concentrations in Mexico, France, and Italy. The malware leverages platform-signed system apps to silently deploy payloads, evade security protections, and execute remotely supplied code. It monetizes compromised devices through advertising fraud and residential-proxy services. The malicious firmware components provide persistent system-level access before device activation and bypass conventional Android security controls by temporarily disabling Google Play Store protections. Affected devices include low-cost Android handsets, counterfeit flagship models, and devices from Doogee and Cubot.
Between April and July 2026, AOMEI Backupper, a Windows backup and disk cloning software, was compromised multiple times in short-lived supply chain attack windows. During these brief periods, users received a downloader for the ShinyRoad modular backdoor framework. The attacker, tracked as UNC7017, tampered with update server configurations to redirect users to malicious payloads, including the CrossRoad dropper, a modified Radmin Server with a malicious DLL, and the Adaptix C2 framework. The campaign used ephemeral tampering windows lasting only five to ten minutes, reverting quickly to authentic versions, which complicated detection. The attack affected a broad range of users opportunistically, with some higher education, IT services, and telecommunications organizations in multiple countries identified as compromised. AOMEI initially dismissed reports of tampering but later took corrective actions after repeated notifications.
Between April and July 2026, attackers compromised AOMEI's update servers to distribute malware via brief modifications to configuration files used by AOMEI Backupper's built-in promotional and notification features. The attackers altered two configuration files to redirect software updates to malicious payloads, delivering a downloader named CROSSROAD and a backdoor called SHINYROAD. These changes were short-lived, lasting only minutes, making detection difficult. The malware established persistence and enabled remote control of infected systems. Additionally, a technique to steal Windows authentication hashes was observed during one attack window. Affected organizations spanned multiple countries and sectors. AOMEI has since upgraded its servers, patched vulnerabilities, and taken corrective actions, though details on the initial breach vector remain undisclosed.
Infoblox attributes the Help Traffic Distribution System (TDS) to Hotejka, a small Russian-language affiliate program believed to be a rebrand of ROI777, which was exposed in 2018. Operating since April 2017, this TDS delivers tech support scams directing users to call centers where social engineering convinces victims to install remote desktop tools like UltraViewer, enabling persistent access for malicious activities. Hotejka's affiliates include Balada Injector, Detour Dog, and DollyWay, who redirect traffic through compromised websites, malvertising, social media, and spam. Since April 2026, operations have leveraged free Cloudflare Pages infrastructure, creating approximately 300 new domains daily. Infoblox developed predictive detection capabilities that identify malicious domains seven days before deployment, successfully detecting over 16,000 domains and reducing customer exposure from 4% to 0.5%. The scam employs browser locks with alarming warnings impersonating Microsoft, ultimately leading vict...
A coordinated disruption targeted Chinese-speaking cybercriminals operating three major phishing kits—CoGUI, CoAceV, and CoFish_Ws—that distributed hundreds of millions of credential phishing messages primarily against Japanese organizations. These phishing campaigns impersonated 66 well-known consumer and finance brands to steal usernames, passwords, and payment data. The threat actors used sophisticated evasion techniques, including approximately 17,000 unique rotating domains. The disruption involved civil lawsuits and domain seizures against ecosystem enablers YAM Store and Iron Man, conducted collaboratively by Microsoft, Health-ISAC, and security partners. This action is expected to significantly disrupt multiple threat groups involved in financial fraud within the Chinese phishing ecosystem.
Microsoft uncovered a Chinese-language cybercriminal ecosystem involving phishing kit developers, an illicit marketplace called YAM Store, and downstream threat actors. This ecosystem enables large-scale phishing campaigns targeting organizations worldwide, including in Japan, the US, Australia, and India. The phishing kits impersonate legitimate brands and facilitate credential theft. YAM Store sells fraudulently acquired Microsoft and Google cloud environments to support these operations. Microsoft and partners disrupted the primary developers and infrastructure behind this ecosystem.
A sophisticated malware campaign named Midnight Mimosa targets low-cost Android devices using MediaTek platforms by preinstalling malicious code in device firmware before user acquisition. The malware operates as a platform-signed system application with elevated privileges, allowing silent installation of apps, permission grants, and remote code execution. It primarily facilitates ad fraud, click fraud, device data collection, and converts infected devices into residential-proxy botnet nodes. The malicious app disguises itself under system-like names and disables Google Play Store during payload deployment to evade detection. Several related malicious apps were also found on Google Play, linked to the same command-and-control infrastructure.
The Psychedelic Stealer is an active malware campaign targeting Ukrainian small-business websites as of September 2026. It tricks victims with a fake Cloudflare CAPTCHA page to manually run msiexec.exe commands that install malware. This malware steals browser credentials, session tokens, and cryptocurrency wallet data from wallets such as MetaMask and Trust Wallet. It maintains persistence through browser extensions using native messaging and scheduled tasks, and communicates with a REST API for further commands. The campaign uses signed Microsoft binaries and avoids encoded PowerShell scripts to evade detection. It is financially motivated and specifically targets Ukrainian victims.
BraZetsu is a Python-based Windows malware framework used by the Brazilian threat actor Exilware. It functions as a toolkit for Initial Access Brokers, converting compromised systems into assets for sale in underground markets. The malware targets corporate, financial, industrial, and law enforcement sectors primarily in Iberia and Latin America. It harvests financial transaction files in the Brazilian CNAB format, browsing histories, and digital certificates. BraZetsu supports the 'Infected Marketplace' where initial access is sold to criminal clients for further exploitation. Since early 2026, it has rapidly evolved to include AI-enhanced reconnaissance and advanced evasion techniques. There is no indication of known exploits in the wild or available patches.
In July 2026, China-aligned threat actor TA419 conducted credential phishing campaigns impersonating prominent economists and AI policymakers, targeting AI experts at US think tanks, universities, and legal organizations. The group sent benign conversation starter emails themed around AI policy topics, such as invitations to join an AI Policy Advisory Committee. Upon receiving responses, TA419 deployed multi-stage URL redirection chains leading to Adversary-in-the-Middle credential phishing pages using a customized Frameless Browser-in-the-Browser tool. Active since April 2025, TA419 consistently targets individuals at US and Japan-based think tanks, defense contractors, universities, and law firms. This activity likely supports Chinese intelligence objectives to monitor US AI policy and regulatory developments amid strategic competition involving AI technologies, model distillation concerns, and export controls between the US and China.
Mir0Auth is a phishing toolkit targeting Microsoft 365 authentication tokens. It uses a multi-step phishing flow starting with a business email lure and a PDF attachment leading to a DocuSign-themed page. Victims are redirected to a legitimate Microsoft Device Code authentication page, allowing attackers to obtain M365 tokens. The toolkit employs obfuscated network communication using XOR encoding for command-and-control URLs and payloads. Primary activity has been observed against US organizations.
Operation Master is a sophisticated cybercrime campaign exploiting a GlobalProtect authentication bypass vulnerability (CVE-2026-0257) to compromise enterprise networks across multiple countries. The attackers conducted extensive network scanning to identify high-value targets, executed SQL injection attacks with privilege escalation to steal databases, and exfiltrated Active Directory credentials. They monetized stolen data by selling it on underground forums and operating a multi-tenant automated invoice fraud platform that sent millions of phishing messages and fraudulent links. The operation employed advanced phishing techniques including M365 OAuth device-code phishing and voice-based credential harvesting, with payments collected via PIX through serverless proxies.
EvilTokens was an AI-powered phishing platform that enabled cybercriminals to compromise over 12,000 email accounts across more than 10,000 organizations worldwide by abusing device code authentication flows. The platform used AI to craft targeted phishing messages, select victims, and extract valuable data from compromised accounts. Microsoft disrupted the platform by seizing infrastructure and arresting two suspects linked to its operation. The platform charged users for access and offered numerous phishing themes to increase success rates.
A suspected Chinese-speaking threat actor linked to Red Heron conducted extensive exploitation campaigns from May to September 2026. The attacker exploited multiple vulnerabilities in WordPress (CVE-2026-63030, CVE-2026-60137) to breach a western government organization, stealing over 18,000 sensitive records including credentials and personally identifiable information. Additionally, the actor exploited CVE-2026-7273 in ZyXEL GS1900 switches, compromising 996 devices across 48 countries and exfiltrating configurations and credentials. The adversary demonstrated sophisticated capabilities such as custom tool development possibly using large language models, privilege escalation, and systematic data exfiltration via PowerShell-based techniques.
An Israeli influence-for-hire company called BlackCore has been identified conducting digital manipulation campaigns across multiple countries. The company operates through a sophisticated infrastructure offering services including discourse dominance, organic engagement manipulation, and counter-operations. Researchers identified a specific campaign involving a 14-week training program delivered to Angolan government employees in early 2026, which included the creation and deployment of fake social media personas and coordinated inauthentic behavior. The operation utilized AI-generated profile pictures, fake news outlets like 'Agita News', and coordinated amplification tactics across Facebook, Instagram, and TikTok. BlackCore's promotional materials openly advertised their capabilities to conduct deceptive influence operations on behalf of government clients, demonstrating how influence-for-hire services have become accessible to state actors seeking to manipulate online discourse.
Analysis reveals HEAVYGRAM, a multi-stage Windows backdoor attributed to Iran-linked threat actor Handala Hack, deployed since Fall 2023 targeting Iranian dissidents, journalists, and government opponents. The surveillance tool uses Telegram bot API for command-and-control operations, enabling remote command execution, screen capture, data exfiltration, and persistent access. Victims receive social-engineered files masquerading as legitimate applications like Telegram, KeePass, or Pictory. The implant supports DLL side-loading, registry persistence, and system reconnaissance. Infrastructure analysis identified 29 samples utilizing networks of Telegram bots and groups for operations. The malware aligns with activity disclosed by U.S. Department of Justice regarding Iran's Ministry of Intelligence and Security infrastructure seizures, with tradecraft including Vultr Object Storage and Persian-language decoys targeting specific victim profiles including academics and media personnel.
VectraRAT is a previously undocumented Malware-as-a-Service platform active since August 2022. It consists of a Go-based control server (VectraHub) and a native C++ Windows implant. The malware offers capabilities including hidden desktop control, keylogging, clipboard hijacking with cryptocurrency address replacement, browser credential theft, and a UAC bypass that elevates privileges without user prompts. It is distributed via Amadey loader and ClickFix campaigns using tax-themed lures. Victims include corporate Windows users, including Windows Server 2025, across multiple countries such as the United States, Russia, and Germany. Infrastructure analysis revealed exposed operational panels and directories across various hosting providers.
