Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×
Desktop Security
security advisory vulnerability
security advisory vulnerability GNOME is officially shortening its standard vulnerability disclosure window from 90 days to 30 days, a change that impacts upstream maintainers, downstream Linux distributions, and system administrators in how they handle software vulnerabilities. The policy shift, announced by long-time security coordinator Michael Catanzaro , addresses modern software patching realities and a growing influx of automated submissions. . Because GNOME is the default desktop environment on several major Linux...
Jul 21, 2026
Security Vulnerabilities security advisory moderate
security advisory moderate For organizations that run a self-hosted Git platform, it’s no longer just about hosting static code repositories. Today, Git servers are responsible for deployment pipelines, API tokens, SSH keys, package repositories, and the automation scripts that push code directly. Confirm that the upgrade addresses known vulnerabilities but also provides production environments. . That makes them trusted systems within the development environment and attractive targets for attackers looking to move...
Jul 20, 2026
Server Securitydata privacy automation
data privacy automation Every system admin has lived through the same Monday morning ritual. A queue of forty tickets, half of them password resets, permission errors, or disk space warnings that any experienced technician could resolve in under two minutes. The other half require actual judgment. For years, automation promised that software would eventually sort the two apart on its own. That promise is now being tested in production Linux environments. . Early results are reshaping how IT teams think about tier-1...
Jul 17, 2026
Privacydata collection automation
data collection automation You're running a web scraping project to collect pricing data from e-commerce sites. You set up a pool of datacenter proxies, launch your scripts, and within minutes — banned . CAPTCHAs everywhere. Your data pipeline stops before it really begins. . It's a frustrating scenario that plays out daily in ad verification, market research, and multi-account management. The website doesn't know you're doing legitimate research or monitoring. It just sees traffic coming from IP ranges it recognizes as...
Jul 17, 2026
Security Trends security advisory social engineering
security advisory social engineering Business Email Compromise used to be a numbers game — mass-blasted emails, broken English, an obvious "URGENT WIRE TRANSFER" subject line. That era is over. Generative AI has turned BEC into a tailored, low-noise operation that mimics writing style, voice, and even video presence. This piece looks at what's actually changed under the hood, what defenders are testing in response, and why so many organizations are still structurally unprepared for it. . The Infrastructure Problem Nobody Wants to...
Jul 17, 2026
Refine news
X Clear Filters
Get the latest News and Insights
Get the latest Linux and open source security news straight to your inbox.
Community Poll
Should Linux servers automatically install security updates?
Trending News
Loading...
Explore Latest Linux Security news
We found 10 articles for you...
214
Linux securityattack techniquescloud securityLinux Security Strategies for Cloud and IoT Environments
For years, Linux security has triggered two very different arguments. One side sees the problem as largely solved. The operating system has a strong permissions model, and open source transparency allows vulnerabilities to be inspected and fixed quickly. The other side sees a growing crisis, pointing to the constant stream of CVEs and the increasing sophistication of modern attacks. In reality, the situation falls somewhere between those views. The more useful question is: who targets Linux systems, and why? . How Attackers Target Linux Systems Linux attackers are not as mysterious as people sometimes assume. Many campaigns are documented in detail after researchers analyze incidents and publish their findings. State-sponsored actors have long understood that a single compromised Linux server can lead to access across an entire network. Financially motivated attackers learned something similar years ago. Linux systems often host valuable databases, and idle compute resources can be quietly redirected into crypto-mining operations that run unnoticed for months. What has changed in recent years is precision. Attackers are no longer relying on broad scanning alone. They study their targets. Kernel versions, distribution choices, and patch cycles all become useful intelligence. Even the default credentials of a particular IoT device model can provide an entry point when thousands of identical deployments exist. Attack motivations usually fall into a few familiar patterns: Data theft: accessing databases, credentials, or sensitive internal records. Resource exploitation: hijacking servers for crypto-mining or botnet activity. Long-term persistence: maintaining quiet access that can be used later for deeper compromise. Different goals, same reality. The initial footholds tend to appear in predictable places. The Potential Access Points That Do Not Disappear Across breach investigations, several Linux entry points appear again and again: Weak SSHconfigurations : password authentication left enabled or root login allowed. Unmanaged package dependencies: vulnerable libraries hidden deep inside dependency chains. Unscanned container base images: images pulled from public repositories without review. Unpatched IoT devices: embedded Linux systems that rarely receive updates. SSH access illustrates the pattern well. A server gets deployed, remote access is enabled, and the plan is to harden it later. That follow-up often never happens. Months pass. Sometimes years. Eventually, automated scanners find the system and begin testing credentials. At that point, the intrusion rarely requires anything sophisticated. Dependencies create a quieter problem. Linux repositories contain thousands of packages, and modern applications often rely on complex dependency trees. A vulnerable library several layers down may sit unnoticed for long periods. Container environments amplify the same risk. Developers pull base images from public registries, build applications on top, and move directly into production. If the base layer already contains a flaw, the application inherits it. IoT devices introduce yet another version of the same issue. Many run Linux kernels that never change after deployment. Manufacturers ship the device and move on to the next model. Years later, those same devices are still operating with the original firmware while attackers continue scanning for them. Practical Linux Security Practices Good Linux security rarely depends on complicated tools. What matters more is consistency. Attackers typically succeed because they encounter systems that were left half-finished or forgotten after deployment. Simply making infrastructure slightly harder to compromise than surrounding targets can dramatically reduce risk. Kubernetes environments highlight this relationship clearly. The control plane runs on Linux. Worker nodes run Linux. Cluster state often lives inside the etcd database on Linux hosts. When one of thoselayers is exposed, the rest of the cluster quickly follows. Securing Kubernetes, therefore, starts with securing the operating systems underneath it. Security teams also watch patch timelines and infrastructure weaknesses closely because they reveal broader industry cyberthreat trends that attackers repeatedly exploit. Security Challenges in Linux-Based IoT Devices IoT environments create their own complications. Many devices simply cannot run traditional security tools. Limited memory, minimal storage, and restricted processing power leave little room for additional software. Some devices cannot even receive updates after deployment. Risk management in these environments usually focuses on a few practical safeguards: Network segmentation: keeping IoT devices separate from core infrastructure networks. Credential enforcement: removing default passwords and requiring unique credentials. Firmware tracking and updates: monitoring device versions and applying updates when possible. Segmentation alone can prevent a small compromise from becoming a major incident. If an IoT device communicates only with a narrow set of services, the damage remains contained even when that device is exploited. Credential management matters just as much. Default passwords remain one of the most common weaknesses in large IoT deployments. Changing credentials across hundreds of devices takes effort, but ignoring the problem leaves attackers an easy path. Firmware updates are often the final challenge. Patches may exist, yet deployed devices never receive them. Organizations that track firmware versions and update devices in a coordinated way significantly reduce long-term exposure. Developing Sustainable Security Habits In the end, Linux security comes down to habits. The organizations that handle it well are rarely the ones with the largest security budgets. More often, they are the teams that keep systems patched, review configurations regularly, and actually read their logs. Those habits scale surprisingly well. The same discipline protecting a single web server can protect a Kubernetes cluster or an entire fleet of IoT devices. Infrastructure changes, but the fundamentals stay the same. Attackers will keep adapting. New techniques will appear, new vulnerabilities will surface, and new tools will be built. Yet many breaches still begin with the same familiar weaknesses. A missing patch. An exposed SSH service . A forgotten device running old firmware. When those small issues are handled consistently, a large portion of the threat landscape simply disappears. . Explore effective Linux security practices for cloud and IoT environments. Learn strategies to prevent attacks and secure infrastructure.. Linux Security, Attack Techniques, Cloud Security, IoT Security, Remediation Strategies. . MaK Ulac
Mar 04, 2026
•
IoT Security
83
security threatsransomwaresecurity implicationsAkira Ransomware Targets Linux Servers: Security Implications for Admins
The Akira ransomware group has extorted approximately $42 million from over 250 victims since January 1, 2024. The group initially focused on Windows systems but later shifted its attention to Linux servers, mainly targeting VMware ESXi virtual machines. The ransomware leverages different methods for initial access to target networks, such as exploiting known flaws in Cisco appliances, spear phishing, and abusing VPN services lacking multi-factor authentication protections. It also utilizes various tools for setting up persistence, privilege escalation, and lateral movement within networks. . What Are the Implications of This Threat for Linux Admins & Users? The ransomware's sophisticated attack techniques include exploiting known vulnerabilities in Cisco appliances and employing advanced hacking tools like Mimikatz and LaZagne for credential scraping and privilege escalation. The evolution of the Akira ransomware group to target Linux servers, a domain traditionally considered more secure , raises thought-provoking questions about the effectiveness of current security measures for Linux systems. This evolution reflects a trend where ransomware groups adapt and innovate to overcome evolving defensive strategies. Furthermore, this discovery presents a critical implication for security practitioners, emphasizing the need for continual vigilance and proactive measures to secure both Windows and Linux environments. For Linux admins and infosec professionals, this underscores the necessity of staying abreast of vulnerabilities and security best practices to protect against such sophisticated threats. Using a "Bring Your Own Vulnerable Driver (BYOVD) attack" to evade detection highlights the need for thorough and proactive vulnerability management to mitigate the risk of such attacks. The relationship between the Akira ransomware group and the defunct Conti ransomware gang should be noted. This raises concerns about potential collaborations or knowledge sharing between threat actor groups.It points to the interconnected nature of the cyber threat landscape and the necessity of a collective, coordinated response from the cybersecurity community to combat such threats effectively. Additionally, the mention of the struggles of the LockBit ransomware group post-law enforcement takedown highlights the potential ripple effects of successful disruption operations against ransomware groups, prompting users and admins to consider the long-term impacts of such interventions on the threat landscape. Our Final Thoughts on This Linux Ransomware Threat As security practitioners, this threat is a stark reminder of ransomware's evolving and adaptive nature and the critical importance of a proactive, multi-layered security approach to defend against it. The evolving tactics of the Akira ransomware group and its targeting of Linux servers emphasize the need for continuous learning, adaptive defenses, and a comprehensive security strategy. This article presents critical insights that Linux admins, infosec professionals, and sysadmins must carefully consider to safeguard their organizations' systems and data against evolving ransomware threats. . The rise of Akira ransomware targeting Linux systems poses serious challenges for cybersecurity, signaling a shift that affects sectors reliant on Linux for critical infrastructure. Akira Ransomware, Linux Security, Credential Exploits, Proactive Defense. . Dave Wreski
Apr 19, 2024
•
Hacks/Cracks
83
malwarecyber crimeattack techniquesVermilion Strike: New Linux Cobalt Strike Port Boosts Attack Capabilities
Hackers have developed a Linux port of the Cobalt Strike penetration testing toolkit dubbed Vermilion Strike to evade malware detection. . Cyber criminals have developed a Linux port of the Cobalt Strike penetration testing tool that has been dubbed Vermilion Strike, security researchers have discovered. The tool has been developed from scratch to avoid detection from malware scanners. According to a report published by cloud security firm Intezer Labs, researchers last month discovered a fully undetected ELF implementation of Cobalt Strike’s beacon . The malware used Cobalt Strike’s Command and Control (C2) protocol when communicating to its C2 server and has remote access capabilities such as uploading files, running shell commands, and writing to files. . Hackers have developed a Linux variant of Cobalt Strike, upgrading their malware avoidance strategies with additional features.. Linux Port Cobalt Strike, Vermilion Strike, Malware Evasion, Penetration Testing Toolkit, Cyber Crime. . LinuxSecurity.com Team
Sep 14, 2021
•
Hacks/Cracks
76
security trainingattack techniquesreverse engineeringAnalyzing Hardware Hacking and Security Insights From Black Hat USA 2015
Software gets much of the hacking spotlight, perhaps understandably so. But the physical infrastructure that runs all that code is just as susceptible to messing with, though it takes a different set of knowledge and techniques. Today's Training trio touch on the more solid side of that divide.. So, the box sits in front of you, its secrets beckoning. Where to start? One great place would be Hands-On Hardware Hacking and Reverse Engineering, a Training which will teach hardware-hacking and reverse-engineering techniques commonly used against electronic products and embedded systems. Topics will include tool tutorials, circuit board analysis and modification, embedded security, and common attack vectors. Pay attention, because at the end you'll have to apply these skills to defeat the security of a custom circuit board. The link for this article located at Dark Reading is no longer available. . Exploring hardware manipulation and reverse engineering techniques can strengthen embedded system security. Tools like side-channel analysis and fault injection help identify vulnerabilities.. Hardware Hacking, Reverse Engineering, Embedded Protection. . Alex
Jul 22, 2015
•
Organizations/Events
83
malwarecybercrimesecurity threatsRansomware Tactics: How Cybercriminals Hold Data Hostage
THE perpetual cat-and-mouse game between computer hackers and their targets is getting nastier. Cybercriminals are getting better at circumventing firewalls and antivirus programs. More of them are resorting to ransomware, which encrypts computer data and holds it hostage until a fee is paid. . Some hackers plant virus-loaded ads on legitimate websites, enabling them to remotely wipe a hard drive clean or cause it to overheat. Meanwhile, companies are being routinely targeted by attacks sponsored by the governments of Iran and China. Even small start-ups are suffering from denial-of-service extortion attacks, in which hackers threaten to disable their websites unless money is paid. The link for this article located at NY Times is no longer available. . Some hackers plant virus-loaded ads on legitimate websites, enabling them to remotely wipe a hard dr. perpetual, cat-and-mouse, between, computer, hackers, their, targets, getting, nastier. . LinuxSecurity.com Team
Jun 23, 2014
•
Hacks/Cracks
83
security advisoryattack techniquesmemory exploitExploration of ASLR Bypasses and Attack Risks on Windows Systems
Sophisticated attackers could soon adopt an innovative technique for bypassing one of the most effective mechanisms for preventing a Windows security breach, researchers say. . The protective technique is called the Address Space Layout Randomization (ASLR). ASLR scrambles the memory positions of key elements of a program, such as the base of the executable and the positions of the stack, heap and libraries. This makes it difficult for an attacker to guess where these elements reside in order to exploit them. The link for this article located at CSO Online is no longer available. . The protective technique is called the Address Space Layout Randomization (ASLR). ASLR scrambles the. sophisticated, attackers, adopt, innovative, technique, bypassing, effec. . LinuxSecurity.com Team
Oct 17, 2013
•
Hacks/Cracks
79
attack techniquesvulnerability assessmentfinancial systemsInfiltration Strategies Used by Consultancies in Financial Sector
Cyber security consultancy Context IS shares some of the techniques it has used to inflitrate financial institutions in 'red team' exercises. One service that some security consultancies provide is called 'red teaming'. This simply means trying to infiltrate a client's IT systems through any means possible, in order to highlight security vulnerabilities that may not have identified. UK security firm Context Information Services has been commissioned by a number of major financial institutions to attack their systems. Last week, it presented some of the techniques it has used successfully - and how the targets could have thwarted them.. Red teaming is vital for consultancies aiding financial institutions. By simulating attacks, expert teams uncover vulnerabilities to enhance security against evolving threats. Red Teaming Techniques, Cybersecurity Strategies, Financial Security Insights. . LinuxSecurity.com Team
Apr 11, 2013
•
Security Projects
79
attack techniquesfirewall bypassnetwork exploitsInvestigating DNS Tunneling and Bypassing Firewalls with Ron Bowes
Hacker Ron Bowes has released various payloads that connect a shell's standard input and output with a suitable online counterpart through DNS. This allows attackers to bypass many firewalls and even attack systems that have no internet connection themselves.. For a DNS tunnel, the host computer only needs to be able to resolve external host names such as https://www.heise.de/en It can then handle its network traffic via sent DNS queries and responses. This concept was already demonstrated by Julien Oster and Florian Heinz via the Name Server Transfer protocol (NSTX), which tunnels entire IP connections via DNS. DNS tunneling requires a suitable server software to run on the DNS server responsible for a domain such as mytunnel.com. The host then simply sends DNS lookup queries such as - d2Vpc2VuaGVpbWVy.mytunnel.com The link for this article located at H Security is no longer available. . DNS tunneling exploits the DNS protocol to create secure channels for data transfer, circumventing firewalls by embedding payloads in DNS queries and responses. DNS Tunneling, Network Exploits, Firewall Bypass, Ron Bowes, Payload Execution. . LinuxSecurity.com Team
Aug 26, 2010
•
Security Projects
Get the latest News and Insights
Get the latest Linux and open source security news straight to your inbox.
Community Poll
Should Linux servers automatically install security updates?
Trending News
Search Topics
Powered By
Linux Security - Your source for Top Linux News, Advisories, HOWTOs and Feature Releases
QUICK LINKS
subscribe to newsletters!
Like staying secure? So do we.
Sign up for updates, tips, and alerts!