https://stackharden.com

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    "excerpt": "Hardened infrastructure guides, scripts and tools for sysadmins and small agencies — with NIS2 and ISO 27001 context baked in.",
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  "markdown": "Practical infrastructure hardening for people who run real systems: SaaS builds, self-hosted apps, WordPress stacks, email servers, and VPS baselines. Every guide explains the security rationale and, where relevant, the NIS2 / ISO 27001 control it maps to — not just copy-paste commands.\n\nStart with the [guides](https://stackharden.com/guides/), grab a [script](https://stackharden.com/scripts/), or run an [infrastructure checklist](https://stackharden.com/checklist/).\n",
  "fullPageMarkdown": "StackHarden\n\nPractical infrastructure hardening for people who run real systems: SaaS builds, self-hosted apps, WordPress stacks, email servers, and VPS baselines. Every guide explains the security rationale and, where relevant, the NIS2 / ISO 27001 control it maps to — not just copy-paste commands.\n\nStart with the [guides](https://stackharden.com/guides/), grab a [script](https://stackharden.com/scripts/), or run an [infrastructure checklist](https://stackharden.com/checklist/).\n\n## Browse by series[All series →](https://stackharden.com/series/)\n\n[### Data-tier hardening\n\nDatabases, caches, backups, and the logs they produce — PostgreSQL and Redis posture, backup and recovery patterns, log minimisation. The data layer of a production service and the operational trail …\n\n7 pieces · Open series →](https://stackharden.com/series/data-tier-hardening/)[### AI security\n\nStrategic and architectural pieces on deploying agentic AI in security contexts — control posture, reference architecture, threat modelling, prompt-injection defences, audit-trail design, with a …\n\n3 pieces · Open series →](https://stackharden.com/series/ai-security/)[### Edge hardening\n\nNginx at the public boundary — modern TLS configuration, rate-limiting and fail2ban patterns, and the operational defaults that keep the edge from becoming the weak link.\n\n3 pieces · Open series →](https://stackharden.com/series/edge-hardening/)[### Host hardening\n\nUbuntu and RHEL / AlmaLinux baselines, the SSH hardening they both depend on, and the system-state controls that turn a fresh provider image into a defensible internet-facing host.\n\n3 pieces · Open series →](https://stackharden.com/series/host-hardening/)[### Compliance\n\nNIS2, ISO 27001, and GDPR translated into the configurations, controls, and evidence an auditor will actually look at — with a short closing position on what is governance work that does not appear on …\n\n2 pieces · Open series →](https://stackharden.com/series/compliance/)[### Launch readiness\n\nPre-launch verification — the 'have we actually done it' layer for new systems about to take production traffic. Currently anchored by the pre-launch VPS security checklist.\n\n2 pieces · Open series →](https://stackharden.com/series/launch-readiness/)[### AI readiness\n\nMaking sites and services consumable by AI agents — Link headers, content signals, schema.org markup, and the emerging conventions that determine whether AI assistants can identify, ingest, and …\n\n1 piece · Open series →](https://stackharden.com/series/ai-readiness/)[### App deployment\n\nPractical deployment recipes for application stacks on a hardened VPS — gunicorn or equivalent under systemd, Caddy or Nginx in front, and the real-world integration bumps that only show up the first …\n\n1 piece · Open series →](https://stackharden.com/series/app-deployment/)\n\n## Latest checklists[All checklists →](https://stackharden.com/checklist/)\n\n[### NIS2 Technical Readiness Checklist\n\nA technical readiness checklist for the NIS2 risk-management measures that have a real surface on the box — hardening, patching, …\n\nOpen checklist →](https://stackharden.com/checklist/nis2-readiness/)[### Agentic AI Deployment Readiness Checklist\n\nA design-review checklist for deploying an agentic AI system in a security context — architecture, threat model coverage, prompt-injection …\n\nOpen checklist →](https://stackharden.com/checklist/agentic-ai-deployment/)[### WordPress Hosting Security Checklist\n\nA pre-launch and ongoing security checklist for agencies hosting WordPress sites — server isolation, wp-config flags, admin posture, plugin …\n\nOpen checklist →](https://stackharden.com/checklist/wordpress-security/)\n\n## Latest guides[All guides →](https://stackharden.com/guides/)\n\n[### Making a Static Site Agent-Ready: What I Changed, What I Didn't, and Why\n\nA practitioner's walk-through of the agent-readiness signals that matter for a static content site on Hugo + Cloudflare Pages — Link headers, Content-Signal, the …\n\nRead guide →](https://stackharden.com/guides/agent-readiness-static-site/)[### Building Agentic AI for Security: Architecture, Threat Modelling, and the Audit Trail You Will Actually Need\n\nReference architecture for an agentic AI security pipeline — STRIDE threat modelling, practical prompt-injection defences, and the audit trail your auditor will actually ask for.\n\nRead guide →](https://stackharden.com/guides/agentic-ai-pipeline-reference/)[### Agentic AI in Security: Why Control Posture Matters More Than Capability\n\nHow to govern agentic AI in a security environment — human-in-the-loop vs human-on-the-loop, least privilege for autonomous systems, the prompt-injection attack surface, and the …\n\nRead guide →](https://stackharden.com/guides/agentic-ai-control-posture/)[### Deploying a Flask Tools Site on a Hardened VPS Behind Caddy\n\nA faithful walkthrough of deploying a small Flask app to a single VPS — system user, gunicorn over a unix socket, systemd with the hardening directives this site recommends, Caddy …\n\nRead guide →](https://stackharden.com/guides/deploying-flask-on-caddy/)[### Log Minimisation Recipes — Nginx, Apache, PostgreSQL, Applications\n\nPractical log\\_format and configuration recipes that capture what you need for debugging and security without retaining what you don't. The application-layer companion to the …\n\nRead guide →](https://stackharden.com/guides/log-minimisation-recipes/)[### Nginx Rate Limiting — limit\\_req, limit\\_conn, and fail2ban\n\nNginx rate limiting that actually protects authentication endpoints, signup flows, and expensive APIs — without locking out legitimate traffic. With sensible defaults and the …\n\nRead guide →](https://stackharden.com/guides/nginx-ratelimit/)[### WordPress Hardening for Agencies\n\nA WordPress hardening baseline aimed at agency hosting — server posture, wp-config flags, admin protection, plugin discipline, and the items that turn a CMS into a compliance …\n\nRead guide →](https://stackharden.com/guides/wordpress-hardening/)[### Hardened RHEL / AlmaLinux VPS Baseline\n\nA pragmatic RHEL 9 / AlmaLinux 9 hardening baseline — first-boot user setup, SSH, firewalld, automatic patching, SELinux verification, audit logging, and the order to apply them …\n\nRead guide →](https://stackharden.com/guides/rhel-baseline/)[### Hardened Ubuntu VPS Baseline\n\nA pragmatic Ubuntu 24.04 LTS hardening baseline — first-boot user setup, SSH, firewall, automatic security updates, audit logging, and time-sync — applied in the right order.\n\nRead guide →](https://stackharden.com/guides/ubuntu-baseline/)[### Encrypted Backups with restic\n\nAn opinionated restic backup baseline — repository design, passphrase survival, retention, off-site targets, verification, and restoration drills. The compliance-friendly default …\n\nRead guide →](https://stackharden.com/guides/encrypted-backups-restic/)\n\nEmails when a new guide, script, or tool ships — roughly weekly, sometimes every few days. Double opt-in, no tracking.\n\n[Subscribe →](https://stackharden.com/subscribe/)\n\n[](https://stackharden.com/#top \"Go to Top (Alt + G)\")\n\n[Subscribe](https://stackharden.com/subscribe/)  ·  [Write for us](https://stackharden.com/contribute/)  ·  [Privacy](https://stackharden.com/privacy/)  ·  [Cookies](https://stackharden.com/cookies/)  ·  [Disclaimer](https://stackharden.com/disclaimer/)\n\nOperated by Data Vision IT Consulting Limited, Kilbride, Wicklow, Ireland.\n",
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    {
      "id": "add_llms_txt",
      "title": "Create /llms.txt",
      "description": "Upload this file to your web root. It tells AI agents what your site is about and which pages matter.",
      "language": "markdown",
      "code": "# StackHarden\n\n> Hardened infrastructure guides, scripts and tools for sysadmins and small agencies — with NIS2 and ISO 27001 context baked in.\n\n## Main\n- [StackHarden](https://stackharden.com): Hardened infrastructure guides, scripts and tools for sysadmins and small agencies — with NIS2 and ISO 27001 context ba…\n- [About](https://stackharden.com/about/)\n- [StackHarden](https://stackharden.com/)\n- [Guides](https://stackharden.com/guides/)\n- [Scripts](https://stackharden.com/scripts/)\n- [Checklists](https://stackharden.com/checklist/)\n- [Learner](https://stackharden.com/learner/)\n- [Series](https://stackharden.com/series/)\n- [Next  »](https://stackharden.com/page/2/)\n\n",
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        },
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          "id": "static",
          "label": "Hugo / Jekyll / Astro",
          "language": "txt",
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        }
      ]
    }
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}

APIを使用してプログラムで取得できます（近日公開）