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Need an in-depth introduction to a new security topic? Our features articles will bring up up-to-date on everything from buffer overflows to SE Linux policy development.

How to Check if Your Linux System is Infected with a Virus

Linux is undoubtedly the best open-source operating system, and is arguably the most secure OS by design.  Most computers these days are Linux-based. Android OS, which is the most commonly used mobile operating system, is also Linux-based. The s...
Jan 23, 2023

Security Considerations for Azure Linux & Windows Subsystem for Linux Users

Azure Linux is a public computing platform developed by...
Jan 16, 2023
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How Physical Security Blends With Cybersecurity

Did you know that during 2022, businesses will have exp...
Dec 26, 2022
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Qualys Research Team Warns of Significant polkit Vulnerability Affecting All Linux Users

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The Qualys Research Team reached out to LinuxSecurity after discovering a memory corruption vulnerability in polkit’s pkexec. Pkexec is a SUID-root program that is installed by default on every major Linux distribution of the open-source operating system. This vulnerability is easily exploited and gives hackers the opportunity to gain full root privileges on a vulnerable host. Much like the Log4j vulnerability, the severity of this flaw is high and it is imperative that vulnerabilities are reported in a timely fashion. Experts also expressed that due to the simple possibility for exploitation the vulnerability needs to be patched and mitigated immediately.

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Pulling Back the Curtain: About LinuxSecurity.com

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Welcome to LinuxSecurity.com - the community's central source for information on Linux and open source security since 1996. Whether you’re a new visitor or a long-time community member, this article will provide you with insight into the mission behind our site, our history and the content we provide.

Brittany Brittany Day
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Network Intrusion Detection Using Snort

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This document takes you through the basics of intrusion detection, the steps necessary to configure a host to run the snort network intrusion detection system, testing its operation, and alerting you to possible intrusion events.

Brittany Brittany Day

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How To Secure the Linux Kernel

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With the support of the open-source community behind it and a strict privilege system embedded in its architecture, Linux has security built into its design. That being said, gone are the days that Linux system administrators could get away with subpar security practices. Cyber criminals have come to view Linux as a viable attack target due to its growing popularity, the valuable devices it powers worldwide, and an array of dangerous new Linux malware variants that have emerged in recent years. 

Brittany Copy 1 Brittany Day
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Protect Your Privacy & Improve Your Pentesting in 2022 with Predator-OS

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Predator-OS - "the OS that naturally preys on others"- is a free and open-source security-centric project for penetration testing and ethical hacking that can also be used as a privacy-focued, hardened Linux distro. LinuxSecurity researchers spoke with Founder and lead developer Hossein Seilany to get insight into the unique features and benefits that newly released Predator-OS 20.04 LTS offers hackers, pentesters and privacy-conscious Linux users.

Brittany Brittany Day
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Log4j: Everything You Need to Know [Updated]

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Security researchers have warned users that attackers are attempting to exploit a critical vulnerability in the Java logging library Apache Log4j. Log4j is a widely used java library that logs error messages in applications used by enterprise software applications as well as custom-built applications intended for in-house usage.

Justice Img Justice Levine
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Anatomy of a Linux Ransomware Attack

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Ransomware has dominated cybersecurity news headlines for the past decade, and for good reason. Through a combination of advanced encryption and effective extortion mechanisms, a ransomware attack can have devastating consequences for any victim including data loss, reputation harm, recovery costs and significant downtime.

Brittany Copy 1 Brittany Day
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Lead Microsoft Engineer Kevin Sheldrake Brings Sysmon to Linux

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Thanks to Kevin Sheldrake, co-author of Sysmon for Linux from Microsoft for working with us on this article. Seven years after Microsoft Sysinternals released Sysmon – a system monitoring tool for Windows that reports key system activity via the event log – we were very proud to release the Linux version of the same tool at the Sysinternals @25 celebration event. (You can still catch up on the talks by clicking on the event link.)

Brittany Brittany Day
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Could Oracle Linux be the Logical Enterprise-Ready CentOS Replacement?

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Red Hat’s recent decision to discontinue CentOS 8 has left a critical void in the enterprise Linux market, shifting the spotlight onto other enterprise-ready Linux distributions. One distro that stands out as a viable CentOS 8 replacement among respected enterprise Linux distributions such as Ubuntu, Red Hat Enterprise Linux (RHEL), AlmaLinux and SUSE is Oracle Linux, an OS compiled from the same open-source code as RHEL.

Brittany Brittany Day

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How to Check if Your Linux System is Infected with a Virus
Security Considerations for Azure Linux & Windows Subsystem for Linux Users
Admins Receive Automated Linux Patch Management & Improved Security with ManageEngine Endpoint Central
Linux Malware: The Truth About This Growing Threat [Updated]
How Physical Security Blends With Cybersecurity

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