Tag: linux
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NDSS 2025 Blindfold: Confidential Memory Management By Untrusted Operating System
Session 6B: Confidential Computing 1 Authors, Creators & Presenters: Caihua Li (Yale University), Seung-seob Lee (Yale University), Lin Zhong (Yale University) PAPER Blindfold: Confidential Memory Management by Untrusted Operating System Confidential Computing (CC) has received increasing attention in recent years as a mechanism to protect user data from untrusted operating systems (OSes). Existing CC solutions…
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NDSS 2025 Blindfold: Confidential Memory Management By Untrusted Operating System
Session 6B: Confidential Computing 1 Authors, Creators & Presenters: Caihua Li (Yale University), Seung-seob Lee (Yale University), Lin Zhong (Yale University) PAPER Blindfold: Confidential Memory Management by Untrusted Operating System Confidential Computing (CC) has received increasing attention in recent years as a mechanism to protect user data from untrusted operating systems (OSes). Existing CC solutions…
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Singularity Linux Kernel Rootkit with klogctl Detection Evasion
Singularity, a stealth-focused Linux Kernel Module (LKM) rootkit targeting modern 6.x kernels, has added a powerful log”evasion capability that prevents its detection through traditional kernel logging interfaces such as klogctl. Designed as a “final boss” rootkit for defenders, Singularity notes deep kernel hooking, advanced log sanitization, and EDR evasion techniques to stay invisible on compromised systems.…
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Chrome Security Update Fixes Remote Code Execution Flaws
Tags: browser, chrome, cyber, flaw, google, linux, remote-code-execution, update, vulnerability, windowsGoogle has released an emergency security update for the Chrome browser, addressing two high-severity vulnerabilities that could enable remote code execution attacks. The stable channel update version 143.0.7499.146/.147 is now rolling out to Windows, Mac, and Linux users.”‹ Critical Vulnerabilities Patched The update fixes two significant security flaws reported by external security researchers. The first…
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React2Shell Vulnerability Actively Exploited to Deploy Linux Backdoors
The security vulnerability known as React2Shell is being exploited by threat actors to deliver malware families like KSwapDoor and ZnDoor, according to findings from Palo Alto Networks Unit 42 and NTT Security.”KSwapDoor is a professionally engineered remote access tool designed with stealth in mind,” Justin Moore, senior manager of threat intel research at Palo Alto…
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React2Shell Vulnerability Actively Exploited to Deploy Linux Backdoors
The security vulnerability known as React2Shell is being exploited by threat actors to deliver malware families like KSwapDoor and ZnDoor, according to findings from Palo Alto Networks Unit 42 and NTT Security.”KSwapDoor is a professionally engineered remote access tool designed with stealth in mind,” Justin Moore, senior manager of threat intel research at Palo Alto…
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Kali Linux 2025.4: New tools and >>qualitylife<< improvements
OffSec has released Kali Linux 2025.4, a new version of its widely used penetration testing and digital forensics platform. Most of the changes are related to appearance and … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2025/12/15/kali-linux-2025-4-new-tools-improvements/
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New VolkLocker Ransomware Variant Targets Both Linux and Windows Systems
CyberVolk, a pro-Russia hacktivist group first documented in late 2024, has resurfaced with a sophisticated ransomware-as-a-service (RaaS) offering called VolkLocker after months of dormancy caused by Telegram enforcement actions. The group returned in August 2025 with version 2.x, featuring advanced Telegram-based automation and cross-platform capabilities targeting both Linux and Windows systems. VolkLocker is built in…
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NVIDIA Merlin Vulnerabilities Allows Malicious Code Execution and DoS Attacks
NVIDIA has released urgent security patches for its Merlin machine learning framework after discovering two high-severity deserialization vulnerabilities that could enable attackers to execute malicious code, trigger denial-of-service attacks, and compromise sensitive data on Linux systems. The security bulletin, published on December 9, 2025, identifies critical flaws in the NVTabular and Transformers4Rec components of NVIDIA…
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New VolkLocker Ransomware Variant Targets Both Linux and Windows Systems
CyberVolk, a pro-Russia hacktivist group first documented in late 2024, has resurfaced with a sophisticated ransomware-as-a-service (RaaS) offering called VolkLocker after months of dormancy caused by Telegram enforcement actions. The group returned in August 2025 with version 2.x, featuring advanced Telegram-based automation and cross-platform capabilities targeting both Linux and Windows systems. VolkLocker is built in…
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New 01Flip Ransomware Targets Both Windows and Linux Systems
Security researchers at Palo Alto Networks Unit 42 have identified a newly emerging ransomware family, 01flip, that represents a significant shift in malware development tactics. Discovered in June 2025, this sophisticated threat is entirely written in Rust a modern programming language that enables cross-platform compatibility and currently targets a limited set of victims across the…
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React2Shell Exploitation Delivers Crypto Miners and New Malware Across Multiple Sectors
React2Shell continues to witness heavy exploitation, with threat actors leveraging the maximum-severity security flaw in React Server Components (RSC) to deliver cryptocurrency miners and an array of previously undocumented malware families, according to new findings from Huntress.This includes a Linux backdoor called PeerBlight, a reverse proxy tunnel named CowTunnel, and a Go-based First seen on…
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PeerBlight Linux Malware Abuses React2Shell for Proxy Tunneling
Tags: backdoor, control, cve, cyber, cybersecurity, exploit, linux, malware, network, remote-code-execution, vulnerabilityCybersecurity researchers have uncovered a sophisticated Linux malware campaign exploiting the critical React2Shell vulnerability (CVE-2025-55182) to deploy multiple post-exploitation payloads. A newly identified backdoor dubbed >>PeerBlight
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PeerBlight Linux Malware Abuses React2Shell for Proxy Tunneling
Tags: backdoor, control, cve, cyber, cybersecurity, exploit, linux, malware, network, remote-code-execution, vulnerabilityCybersecurity researchers have uncovered a sophisticated Linux malware campaign exploiting the critical React2Shell vulnerability (CVE-2025-55182) to deploy multiple post-exploitation payloads. A newly identified backdoor dubbed >>PeerBlight
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North Korea-linked Actors Exploit React2Shell to Deploy New EtherRAT Malware
Threat actors with ties to North Korea have likely become the latest to exploit the recently disclosed critical security React2Shell flaw in React Server Components (RSC) to deliver a previously undocumented remote access trojan dubbed EtherRAT.”EtherRAT leverages Ethereum smart contracts for command-and-control (C2) resolution, deploys five independent Linux persistence mechanisms, and First seen on thehackernews.com…
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North Korean hackers exploit React2Shell flaw in EtherRAT malware attacks
A new malware implant called EtherRAT, deployed in a recent React2Shell attack, runs five separate Linux persistence mechanisms and leverages Ethereum smart contracts for communication with the attacker. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/north-korean-hackers-exploit-react2shell-flaw-in-etherrat-malware-attacks/
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AI-Driven Tools Uncover GhostPenguin Backdoor Attacking Linux Servers
A sophisticated Linux backdoor named GhostPenguin has been discovered by Trend Micro Research, evading detection for over four months after its initial submission to VirusTotal in July 2025. The threat represents a new breed of stealthy malware designed to maintain a low profile while delivering comprehensive remote access and file system manipulation capabilities to threat…
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AI-Driven Tools Uncover GhostPenguin Backdoor Attacking Linux Servers
A sophisticated Linux backdoor named GhostPenguin has been discovered by Trend Micro Research, evading detection for over four months after its initial submission to VirusTotal in July 2025. The threat represents a new breed of stealthy malware designed to maintain a low profile while delivering comprehensive remote access and file system manipulation capabilities to threat…
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OceanLotus Targets Xinchuang Ecosystem with Sophisticated Supply Chain Attacks
The advanced persistent threat (APT) group known as OceanLotus (APT32) has been observed launching a sophisticated cyberespionage campaign specifically targeting China’s >>Xinchuang
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OceanLotus Targets Xinchuang Ecosystem with Sophisticated Supply Chain Attacks
The advanced persistent threat (APT) group known as OceanLotus (APT32) has been observed launching a sophisticated cyberespionage campaign specifically targeting China’s >>Xinchuang
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OceanLotus Targets Xinchuang Ecosystem with Sophisticated Supply Chain Attacks
The advanced persistent threat (APT) group known as OceanLotus (APT32) has been observed launching a sophisticated cyberespionage campaign specifically targeting China’s >>Xinchuang
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Warning: React2Shell vulnerability already being exploited by threat actors
Tags: ai, application-security, attack, china, cloud, communications, credentials, data, data-breach, exploit, firewall, framework, group, infosec, intelligence, linux, malicious, malware, open-source, service, software, threat, tool, update, vulnerability, wafSystem.Management.Automation.AmsiUtils.amsiInitFailed = true (a standard AMSI bypass), and iex executes the next stage.JFrog’s security research team also today reported finding a working proof of concept that leads to code execution, and they and others have also reported finding fake PoCs containing malicious code on GitHub. “Security teams must verify sources before testing [these PoCs],” warns JFrog.Amitai Cohen, attack…
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Google Rolls Out Chrome 143 Update for Billions Worldwide
Chrome 143 fixes 13 security vulnerabilities, including four high-severity flaws, in a December desktop update rolling out to Windows, macOS, and Linux users. The post Google Rolls Out Chrome 143 Update for Billions Worldwide appeared first on TechRepublic. First seen on techrepublic.com Jump to article: www.techrepublic.com/article/news-chrome-143-update-13-security-fixes/
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New Stealthy Linux Malware Merges Mirai-based DDoS Botnet with Fileless Cryptominer
Cybersecurity researchers uncover a sophisticated Linux campaign that blends legacy botnet capabilities with modern evasion techniques. A newly discovered Linux malware campaign is demonstrating the evolving sophistication of threat actors by combining Mirai-derived distributed denial-of-service (DDoS) functionality with a stealthy, fileless cryptocurrency mining operation. According to research from Cyble Research & Intelligence Labs (CRIL), the…
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Sicherheitslücken in Linux-Grafikkomponenten – X.Org und Xwayland trotz unklarem Angriffsweg angreifbar
Tags: linuxFirst seen on security-insider.de Jump to article: www.security-insider.de/bsi-warnt-vor-schwachstellen-in-xorg-und-xwayland-a-f44e44c9d8ea7c1f088dc601cccdd0cf/
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The BOSS Breach: APT36 Pivots to Linux Espionage with >>Silent<< Shortcuts
The post The BOSS Breach: APT36 Pivots to Linux Espionage with >>Silent
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U.S. CISA adds an OpenPLC ScadaBR flaw to its Known Exploited Vulnerabilities catalog
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds an OpenPLC ScadaBR flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added an OpenPLC ScadaBR flaw, tracked as CVE-2021-26829 (CVSS score of 5.4), to its Known Exploited Vulnerabilities (KEV) catalog. The vulnerability is a cross-site scripting (XSS) flaw that impacts Windows and Linux versions via system_settings.shtm.…
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U.S. CISA adds an OpenPLC ScadaBR flaw to its Known Exploited Vulnerabilities catalog
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds an OpenPLC ScadaBR flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added an OpenPLC ScadaBR flaw, tracked as CVE-2021-26829 (CVSS score of 5.4), to its Known Exploited Vulnerabilities (KEV) catalog. The vulnerability is a cross-site scripting (XSS) flaw that impacts Windows and Linux versions via system_settings.shtm.…
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APT36 Deploys Python-Based ELF Malware in Targeted Attacks on Indian Government Agencies
Pakistan-linked cyberespionage group APT36 (Transparent Tribe) has escalated its campaign against Indian government institutions with the deployment of sophisticated Python-based ELF malware specifically designed to compromise Linux-based BOSS operating environments, according to research published by CYFIRMA. The threat actor, historically focused on Windows systems, has demonstrated expanded technical maturity through multi-platform tooling that bypasses conventional…
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Linux 6.18 Rolls Out With Major Hardware Support Upgrades and Driver Enhancements
Linus Torvalds has officially released Linux 6.18, the latest stable version of the Linux kernel. The announcement came on Sunday, November 30, 2025, marking another milestone for the open-source operating system that powers everything from smartphones to supercomputers. Torvalds shared the news through the Linux kernel mailing list, noting that while there was more bugfixing…