AI Data Poisoning Defense: How to Protect Proprietary Company Data from Competitor Models
AI Data Poisoning Defense guide for companies protecting proprietary data from AI scraping, competitor model training, crawlers, leaks, and misuse.
How to Monitor System Resources with htop, top and vmstat on RHEL 9
Every Linux administrator needs a reliable toolkit for answering the question “why is this server slow?” The answer is almost always in one of four resources: CPU, memory, disk I/O, or network. RHEL 9 includes several powerful tools for diagnosing resource contention: top is included in every base installation and provides a real-time process table; […]
Alpine Linux edge — nodejs — multiple vulnerabilities (20 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 8.9.3-r0 📖 ~4 min read • Source: Alpine secdb entry — nodejs 8.9.3-r0 Related CVEs: CVE-2017-15896 CVE-2017-15897 CVE-2018-12115 CVE-2018-7167 CVE-2018-7161 CVE-2018-1000168 CVE-2018-7158 CVE-2018-7159 +12 more Upstream summary: Alpine main repository for vedge ships nodejs 8.9.3-r0 which […]
Ubuntu 14.04 LTS NTP Drift Causes Kerberos and SSL Failures
🟠 High ⏱ 5–30 min Last verified: 19 May 2026 Affected versions: 14.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]
RHEL 9 SSH Login Rejected After Hardening Changes
🟡 Medium ⏱ 5–30 min Last verified: 19 May 2026 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]
openSUSE Tumbleweed — ikiwiki — multiple vulnerabilities (14 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory openSUSE-SU-2016:1261-1 (see also SUSE bugzilla) Related CVEs: CVE-2016-3714 CVE-2008-0169 CVE-2009-2944 CVE-2011-0428 CVE-2011-1401 CVE-2012-0220 CVE-2014-1572 CVE-2016-10026 +6 more Upstream summary: The (1) EPHEMERAL, (2) HTTPS, (3) MVG, (4) MSL, (5) TEXT, (6) SHOW, […]
How to Install Icinga2 on Debian 9
Introduction This guide explains how to Install Icinga2 on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the standard repositories […]
Arch Linux — lib32-wavpack — multiple vulnerabilities (3 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read • Source: Arch ASA ASA-201802-13 Related CVEs: CVE-2018-7254 CVE-2018-7253 CVE-2018-6767 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 4.80.0-1. Fixed in: 5.1.0-2. Group: AVG-634. Table of contents Symptom & Impact Environment & Reproduction […]
How to Integrate Windows Server 2016 with Azure Active Directory
Introduction Integrating Windows Server 2016 with Azure Active Directory (Azure AD) enables hybrid identity, allowing on-premises users to access Microsoft 365, Azure, and SaaS applications using the same credentials. Azure AD Connect is the synchronisation engine that bridges your on-premises AD with Azure AD, handling user, group, and password synchronisation. Prerequisites Before installing Azure AD […]
Sysadmin eBook: Faire fonctionner les serveurs
<$>[note] [label Télécharger le eBook complet] Faire fonctionner les serveurs : Un guide pratique de l’administration des systèmes un eBook au format EPUB [*Faire fonctionner les serveurs : un Guide pratique pour l’administration du système *un…
