The RondoDox botnet is actively exploiting the React2Shell vulnerability to compromise thousands of unpatched devices. This threat leverages a known code execution flaw to hijack vulnerable systems, primarily targeting those that have not applied available patches. While exploitation in the wild is not yet widely confirmed, the botnet's activity indicates a growing risk of large-scale device compromise. European organizations with unpatched infrastructure are at risk of device hijacking, leading to potential service disruption and data integrity issues. The threat is medium severity but could escalate if exploitation becomes widespread. Mitigation requires immediate patching of affected systems and enhanced network monitoring for unusual botnet-related traffic. Countries with high IoT and enterprise device usage, especially those with historically targeted sectors, are more likely to be affected. The threat does not require user interaction but targets unpatched systems, increasing its potential impact. Defenders should prioritize vulnerability management and incident response readiness to mitigate this evolving botnet threat.
MuddyWater, an Iran-aligned cyberespionage group, has been targeting critical infrastructure in Israel and Egypt with custom malware and improved tactics. The campaign uses previously undocumented tools like the Fooder loader and MuddyViper backdoor to enhance defense evasion and persistence. Fooder masquerades as a Snake game and uses game-inspired techniques to hinder analysis. MuddyViper enables system information collection, file manipulation, and credential theft. The group also employs browser-data stealers and reverse tunneling tools. This campaign demonstrates MuddyWater's evolution towards more sophisticated and refined approaches, though traces of operational immaturity remain. The group continues to pose a significant threat, particularly to government, military, telecommunications, and critical infrastructure sectors in the Middle East.
ESET researchers have uncovered a new China-aligned APT group named LongNosedGoblin targeting governmental entities in Southeast Asia and Japan for cyberespionage. The group employs a varied custom toolset of C#/.NET applications and abuses Group Policy for lateral movement. Key tools include NosyHistorian for collecting browser history, NosyDoor backdoor using cloud services as C&C, and NosyStealer for exfiltrating browser data. The attackers also utilize techniques like AppDomainManager injection and AMSI bypassing. LongNosedGoblin has been active since at least September 2023, showing ongoing campaigns throughout 2024 and 2025. The research provides detailed analysis of the group's malware and tactics, including potential sharing of the NosyDoor backdoor among multiple China-aligned actors.
The deal involved aerospace and defense specialist Emcore Corp.selling its computer chips and wafer fabrication operation. The post President Trump Orders Divestment in $2.9 Million Chips Deal to Protect US Security Interests appeared first on SecurityWeek .
A ransomware attack on Covenant Health resulted in a data breach affecting over 478,000 individuals. The attack involved malware that encrypted or compromised sensitive health data, leading to significant exposure of personal information. Although no specific exploited vulnerabilities or affected software versions are detailed, the breach highlights the ongoing risk ransomware poses to healthcare organizations. There is no indication of known exploits in the wild beyond this incident. The breach underscores the importance of robust cybersecurity measures in protecting sensitive health data. European healthcare organizations face similar risks due to comparable threat landscapes and regulatory environments. Mitigation requires targeted strategies including network segmentation, advanced endpoint detection, and incident response readiness. Countries with large healthcare sectors and high adoption of similar IT infrastructure are most at risk. The severity is assessed as high due to the scale of data exposure, potential for patient harm, and operational disruption. Defenders should prioritize proactive ransomware defenses and comprehensive data protection protocols.
A critical security threat has emerged involving over 10,000 Fortinet firewalls that are vulnerable to an actively exploited two-factor authentication (2FA) bypass. This vulnerability allows attackers to circumvent the additional security layer provided by 2FA, potentially gaining unauthorized access to firewall management interfaces. The exploitation of this flaw can lead to severe consequences including network compromise, data breaches, and disruption of services. European organizations using Fortinet firewalls are at significant risk, especially those in sectors with high reliance on secure perimeter defenses. The threat is rated high severity due to the potential impact on confidentiality, integrity, and availability, combined with the ease of exploitation without requiring user interaction. Immediate mitigation steps include applying vendor patches once available, restricting administrative access via VPN or IP whitelisting, and enhancing network monitoring for suspicious activities. Countries with high Fortinet market penetration and critical infrastructure sectors, such as Germany, France, the UK, and the Netherlands, are likely to be most affected. Defenders must prioritize this threat to prevent widespread compromise and maintain network security.
A hacker claims to have stolen over 3 million records from Tokyo FM, a major Japanese radio broadcaster, indicating a significant data breach. The breach was reported via Reddit and linked to an external news source, but technical details and affected systems remain undisclosed. No known exploits or patches have been identified yet. The breach poses a high risk to confidentiality due to the volume of data compromised, potentially including personal information of listeners or employees. European organizations may face indirect impacts through partnerships or data sharing with affected entities. Mitigation focuses on enhanced monitoring, incident response readiness, and reviewing data sharing agreements. Countries with strong media sectors and close business ties to Japan, such as Germany, the UK, and France, are more likely to be affected. Given the scale and nature of the breach, the suggested severity is high due to the potential for identity theft, reputational damage, and regulatory consequences. Defenders should prioritize verifying the breach scope, securing exposed systems, and preparing for possible secondary attacks leveraging stolen data.
The Transparent Tribe threat actor has launched new Remote Access Trojan (RAT) attacks targeting Indian government and academic institutions. These attacks involve sophisticated malware designed to gain persistent unauthorized access, enabling espionage and data exfiltration. Although primarily focused on Indian entities, the techniques and malware used could potentially be adapted to target organizations in Europe, especially those with geopolitical or academic ties to India. The threat is considered high severity due to the targeted nature and potential impact on confidentiality and integrity of sensitive data. No public CVSS score is available, but the threat is assessed as high severity given the ease of exploitation and significant impact. European organizations should be vigilant, particularly those collaborating with Indian counterparts or involved in related research fields. Mitigation requires advanced detection, network segmentation, and threat intelligence sharing. Countries with strong academic and governmental ties to India, such as the UK, Germany, and France, are more likely to be affected. Defenders must prioritize monitoring for RAT indicators, enforce strict access controls, and maintain updated endpoint protections to mitigate this threat.
The Kimwolf Botnet is a recently reported high-severity botnet threat that targets local networks. It is actively stalking local network environments to potentially compromise devices and expand its reach. While detailed technical specifics are limited, the botnet's presence on local networks suggests it may exploit network vulnerabilities or weak device security to propagate. There are no known exploits in the wild yet, but the threat is considered high priority due to its potential impact. European organizations could face risks including unauthorized access, data exfiltration, and disruption of network services. Mitigation requires enhanced local network monitoring, segmentation, and device hardening beyond generic advice. Countries with high IoT and networked device adoption, significant industrial infrastructure, or strategic geopolitical importance in Europe are more likely to be targeted. Given the botnet’s ability to infiltrate local networks without requiring user interaction or authentication, the suggested severity is high. Defenders should prioritize detection capabilities and proactive network hygiene to mitigate this emerging threat.
Flock, a provider of AI-enabled surveillance cameras, has exposed its devices, potentially allowing unauthorized access to video feeds and sensitive data. This exposure raises concerns about privacy violations and unauthorized surveillance. The threat involves AI-powered cameras that may be accessible due to misconfigurations or vulnerabilities. Although no known exploits are currently in the wild, the medium severity rating reflects the potential risks to confidentiality and privacy. European organizations using Flock cameras could face data breaches and compliance issues under GDPR. Mitigation requires immediate review of device configurations, network segmentation, and strict access controls. Countries with higher adoption of smart surveillance and strong privacy regulations, such as Germany, France, and the UK, are particularly at risk. Given the ease of exploitation through exposed devices and the sensitivity of surveillance data, the suggested severity is medium. Defenders should prioritize securing AI surveillance infrastructure to prevent unauthorized access and data leakage.
A phishing campaign is abusing Google Cloud applications to impersonate legitimate Google emails, deceiving recipients into trusting malicious messages. Attackers leverage the credibility of Google Cloud infrastructure to bypass traditional email security filters and increase the success rate of phishing attempts. This technique enables threat actors to send emails that appear authentic, potentially leading to credential theft, malware deployment, or further social engineering attacks. The campaign is currently assessed as medium severity due to its potential impact and ease of exploitation without requiring user interaction beyond opening the email. European organizations, especially those heavily reliant on Google Workspace and cloud services, face increased risk. Mitigation requires enhanced email filtering, user awareness training focused on recognizing subtle phishing cues, and strict verification of email sources even when messages appear to come from trusted domains. Countries with high adoption of Google services and significant cloud infrastructure usage, such as the UK, Germany, France, and the Netherlands, are most likely to be targeted. Given the campaign's use of trusted cloud platforms to impersonate legitimate emails, defenders must remain vigilant and implement layered security controls to reduce exposure.
A newly disclosed Windows persistence technique leverages NTUSER. MAN file writes to achieve registry-based persistence without triggering registry callback detections in Endpoint Detection and Response (EDR) systems. This method bypasses common monitoring mechanisms by avoiding direct registry calls to HKCU, making it stealthy and effective for medium integrity persistence. Although no known exploits are currently in the wild, the technique poses a medium severity risk due to its evasion capabilities and potential for undetected persistence. European organizations relying on Windows environments and EDR solutions that monitor registry callbacks should be aware of this threat. Mitigation requires enhanced monitoring of NTUSER. MAN file modifications and behavioral analysis beyond traditional registry callback detection. Countries with high Windows adoption and advanced cyber threat landscapes, such as Germany, France, and the UK, are likely more exposed. The technique’s stealth and ease of implementation elevate its risk profile, warranting proactive defensive measures.
Ryan Goldberg and Kevin Martin have admitted being affiliates of the BlackCat/Alphv ransomware group. The post Two US Cybersecurity Pros Plead Guilty Over Ransomware Attacks appeared first on SecurityWeek .
The Qilin ransomware group hacked the healthcare organization and stole data from its systems in May 2025. The post Covenant Health Data Breach Impacts 478,000 Individuals appeared first on SecurityWeek .
GreyNoise has observed thousands of requests targeting a dozen vulnerabilities in Adobe ColdFusion during the Christmas 2025 holiday. The post Adobe ColdFusion Servers Targeted in Coordinated Campaign appeared first on SecurityWeek .
The RondoDox botnet exploits a critical vulnerability known as React2Shell to compromise IoT devices and web servers. This flaw allows attackers to execute arbitrary code remotely, enabling the hijacking of vulnerable systems to incorporate them into the botnet. Although no specific affected versions or patches have been disclosed yet, the threat is considered critical due to the potential scale and impact. European organizations operating IoT infrastructure or web services are at risk, especially those with devices lacking timely security updates. The botnet could be leveraged for large-scale DDoS attacks, data exfiltration, or further network infiltration. Mitigation requires proactive network monitoring, segmentation of IoT devices, and rapid deployment of vendor patches once available. Countries with high IoT adoption and significant web infrastructure, such as Germany, the UK, France, and the Netherlands, are most likely to be targeted. Given the ease of exploitation and critical impact on confidentiality, integrity, and availability, the suggested severity is critical. Defenders should prioritize detection and containment efforts immediately to prevent widespread compromise.
