How to Create an Immutable Class in Java
Learn how to define immutable classes in Java, why immutability matters, and how to build thread-safe, robust applications using immutable objects.
How to Configure PostgreSQL Remote Access and SSL on RHEL 7
How to Configure PostgreSQL Remote Access and SSL on RHEL 7 By default, PostgreSQL on RHEL 7 only accepts connections from localhost and rejects all remote clients. For multi-tier applications where the web or application server runs on a separate host from the database, you need to explicitly open PostgreSQL to remote connections — and […]
FreeBSD 12 — enscript-letter — multiple vulnerabilities (5 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: enscript — arbitrary code execution vulnerability Related CVEs: CVE-2004-1184 CVE-2004-1185 CVE-2004-1186 CVE-2008-3863 CVE-2008-4306 Upstream summary: Ulf Harnhammar of Secunia Research reports: Stack-based buffer overflow in the read_special_escape function in src/psgen.c […]
How To Configure GeoIP (PECL) With Piwik On An Ubuntu 12.04 VPS
This tutorial walks you through the configuration of GeoIP with Piwik on an Ubuntu 12.04 VPS.
Ubuntu 16.04 — squirrelmail — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4669-1 Related CVEs: CVE-2019-12970 Upstream summary: It was discovered that a cross-site scripting (XSS) vulnerability in SquirrelMail allows remote attackers to use malicious script content from HTML e-mail to execute […]
Kubernetes: Infrastructure Best Practices
Best practices to set up Production-Ready DOKS Infrastructure
Animation Callbacks in Angular
Learn how you can hook into the start or end of animations in Angular and call your own methods.
How to Deploy a Django Application with Gunicorn and Nginx on RHEL 8
Django is one of the most popular Python web frameworks, and deploying it in production requires more than the built-in development server. The recommended production stack on RHEL 8 pairs Django with Gunicorn as the WSGI application server and Nginx as a reverse proxy that handles static files, TLS termination, and connection management. This tutorial […]
openSUSE Tumbleweed — libass5 — multiple vulnerabilities (3 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory SUSE-SU-2016:3107-1 (see also SUSE bugzilla) Related CVEs: CVE-2016-7969 CVE-2016-7970 CVE-2016-7972 Upstream summary: The wrap_lines_smart function in ass_render.c in libass before 0.13.4 allows remote attackers to cause a denial of service (out-of-bounds read) […]
Beyond Ransomware: Why Corporate Boardrooms are Pivoting to Face Cyber-Enabled Invoice and Payment Fraud
A board-level guide to cyber-enabled invoice and payment fraud, including business email compromise, supplier impersonation, approval controls, and payment monitoring.
