--- title: "#linux-security articles | Hashnode" description: "Explore 34 articles tagged #linux-security on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/linux-security" --- Tag # #linux-security 34 posts · 0 followers [Paul Adeoye](https://hashnode.com/@PaulKing) · [Oct 6](https://hashnode.com/posts/linux-users-groups-permissions-and-privilege-management/6ac4c6d556666c072201fc0d) ### [Linux Users, Groups, Permissions, and Privilege Management](https://paulking.hashnode.dev/linux-users-groups-permissions-and-privilege-management?utm_source=hashnode&utm_medium=feed) Learn how Linux users, groups, file permissions, ownership, sudo, and privilege management work to secure and administer Linux servers. 11 min read · [paulking.hashnode.dev](https://paulking.hashnode.dev/linux-users-groups-permissions-and-privilege-management?utm_source=hashnode&utm_medium=feed) [Yogeshwar Peela](https://hashnode.com/@exploitnotes) · [Aug 18](https://hashnode.com/posts/tryhackme-athena-writeup/6a8481693fa56856fb89762c) ### [TryHackMe : Athena Writeup](https://exploitnotes.hashnode.dev/tryhackme-athena-writeup?utm_source=hashnode&utm_medium=feed) Solve TryHackMe Athena using anonymous SMB, newline command injection, systemd script hijacking, and a modified Diamorphine LKM rootkit. 8 min read · [exploitnotes.hashnode.dev](https://exploitnotes.hashnode.dev/tryhackme-athena-writeup?utm_source=hashnode&utm_medium=feed) [Yogeshwar Peela](https://hashnode.com/@exploitnotes) · [Jul 19](https://hashnode.com/posts/hackthebox-pterodactyl-writeup/6a5cebb3605ee0f66df2f8ed) ### [HackTheBox : Pterodactyl Writeup](https://exploitnotes.hashnode.dev/hackthebox-pterodactyl-writeup?utm_source=hashnode&utm_medium=feed) HackTheBox Pterodactyl writeup: CVE-2025-49132 RCE, .env creds, bcrypt cracking, SSH foothold, and root via CVE-2025-6018/6019. 15 min read · [exploitnotes.hashnode.dev](https://exploitnotes.hashnode.dev/hackthebox-pterodactyl-writeup?utm_source=hashnode&utm_medium=feed) [K4M1\_n0\_73](https://hashnode.com/@0xKAM1) · [Jul 19](https://hashnode.com/posts/scoping-out-a-linux-server-kioptrix-1-recon-and-enumeration/6a5c929628cd65f9386b5f30) ### [Scoping out a Linux server / Kioptrix 1 Recon and Enumeration.](https://0xk4m1.hashnode.dev/scoping-out-a-linux-server-kioptrix-1-recon-and-enumeration?utm_source=hashnode&utm_medium=feed) Mapping out the attack surface before running any exploits 8 min read · [0xk4m1.hashnode.dev](https://0xk4m1.hashnode.dev/scoping-out-a-linux-server-kioptrix-1-recon-and-enumeration?utm_source=hashnode&utm_medium=feed) [Yogeshwar Peela](https://hashnode.com/@exploitnotes) · [Jul 17](https://hashnode.com/posts/hackthebox-void-whispers-writeup/6a5a2fa0091a449c2ff7d47b) ### [HackTheBox : Void Whispers Writeup](https://exploitnotes.hashnode.dev/hackthebox-void-whispers-writeup?utm_source=hashnode&utm_medium=feed) Learn how to exploit the Void Whispers challenge using OS command injection, bypass the space filter with IFS, and retrieve the flag safely. Now! Fast 4 min read · [exploitnotes.hashnode.dev](https://exploitnotes.hashnode.dev/hackthebox-void-whispers-writeup?utm_source=hashnode&utm_medium=feed) [Vũ Nhật Lâm](https://hashnode.com/@kami61) · [May 21](https://hashnode.com/posts/pamdoora-the-linux-pam-backdoor-that-turns-ssh-into-a-silent-trap/6a0ecca18b034602211bead7) ### [PamDOORa: The Linux PAM Backdoor That Turns SSH Into a Silent Trap](https://blog.fiscybersec.com/pamdoora-the-linux-pam-backdoor-that-turns-ssh-into-a-silent-trap?utm_source=hashnode&utm_medium=feed) Executive Summary A post-exploitation backdoor for Linux called PamDOORa surfaced on a Russian cybercrime forum in May 2026, offered at \\(1,600 — later dropped to \\)900. The tool embeds itself inside 13 min read · [blog.fiscybersec.com](https://blog.fiscybersec.com/pamdoora-the-linux-pam-backdoor-that-turns-ssh-into-a-silent-trap?utm_source=hashnode&utm_medium=feed) [Virusis Blog](https://hashnode.com/@virusis) · [May 11](https://hashnode.com/posts/11052026-cyber-security-briefly-news-critical-threat-convergence-linux-kernel-exploits-ai-supply-chain-hijacks-and-evolving-privacy-erosion/6a0194d68f89f94efe80542d) ### [11/05/2026 Cyber Security Briefly News - Critical Threat Convergence: Linux Kernel Exploits, AI Supply Chain Hijacks, and Evolving Privacy Erosion](https://blog.virusis.com/11052026-cyber-security-briefly-news-critical-threat-convergence-linux-kernel-exploits-ai-supply-chain-hijacks-and-evolving-privacy-erosion?utm_source=hashnode&utm_medium=feed) ⏱️ Concise Cyber Intel: Time-Saving Strategic Analysis for Pros 5 min read · [blog.virusis.com](https://blog.virusis.com/11052026-cyber-security-briefly-news-critical-threat-convergence-linux-kernel-exploits-ai-supply-chain-hijacks-and-evolving-privacy-erosion?utm_source=hashnode&utm_medium=feed) [Virusis Blog](https://hashnode.com/@virusis) · [May 3](https://hashnode.com/posts/03052026-cyber-security-briefly-news-critical-vulnerability-exploitation-and-ai-enhanced-attack-automation-surge/69f708d2bd6888f03d582d5a) ### [03/05/2026 Cyber Security Briefly News - Critical Vulnerability Exploitation and AI-Enhanced Attack Automation Surge](https://blog.virusis.com/03052026-cyber-security-briefly-news-critical-vulnerability-exploitation-and-ai-enhanced-attack-automation-surge?utm_source=hashnode&utm_medium=feed) ⏱️ Concise Cyber Intel: Time-Saving Strategic Analysis for Pros 6 min read · [blog.virusis.com](https://blog.virusis.com/03052026-cyber-security-briefly-news-critical-vulnerability-exploitation-and-ai-enhanced-attack-automation-surge?utm_source=hashnode&utm_medium=feed) [Lokendra Bhat](https://hashnode.com/@LokendraBhat) · [Mar 27](https://hashnode.com/posts/mastering-selinux-the-complete-guide-for-devops-engineers/69c6066910e664c5da7f739f) ### [Mastering SELinux: The Complete Guide for DevOps Engineers](https://blog.lokendrabhat.com.np/mastering-selinux-the-complete-guide-for-devops-engineers?utm_source=hashnode&utm_medium=feed) Learn how SELinux works, configure enforcing/permissive/disabled modes, manage file contexts, boole 13 min read · [blog.lokendrabhat.com.np](https://blog.lokendrabhat.com.np/mastering-selinux-the-complete-guide-for-devops-engineers?utm_source=hashnode&utm_medium=feed) [Ericson Willians](https://hashnode.com/@m15k47on1c) · [Feb 26](https://hashnode.com/posts/when-deserialization-meets-eval-anatomy-of-a-full-stack-compromise/69a0d42f0a5a8a543034fa00) ### [When Deserialization Meets eval(): Anatomy of a Full-Stack Compromise](https://scarletbuffer.hashnode.dev/when-deserialization-meets-eval-anatomy-of-a-full-stack-compromise?utm_source=hashnode&utm_medium=feed) Hack the Box: Interpreter 5 min read · [scarletbuffer.hashnode.dev](https://scarletbuffer.hashnode.dev/when-deserialization-meets-eval-anatomy-of-a-full-stack-compromise?utm_source=hashnode&utm_medium=feed)