https://www.innerwarden.com/blog Technical articles on Linux server security, SSH brute-force detection, honeypots, threat intelligence sharing, and automated defense. en-us Sat, 28 Mar 2026 05:08:16 GMT https://www.innerwarden.com/blog/detect-obfuscated-reverse-shells https://www.innerwarden.com/blog/detect-obfuscated-reverse-shells Sat, 21 Mar 2026 00:00:00 GMT Why regex fails for obfuscated commands like hex-encoded payloads, base64 pipelines, and Python reverse shells. How tree-sitter AST analysis detects them structurally. Threat Detection https://www.innerwarden.com/blog/honeypot-attackers-cant-detect https://www.innerwarden.com/blog/honeypot-attackers-cant-detect Sat, 21 Mar 2026 00:00:00 GMT Fake /proc/cpuinfo, /proc/self/cgroup, 25+ shell commands, and LLM fallback. How our honeypot passes the checks advanced attackers use to detect traps. Honeypots https://www.innerwarden.com/blog/grafana-server-security-monitoring https://www.innerwarden.com/blog/grafana-server-security-monitoring Sat, 21 Mar 2026 00:00:00 GMT Tutorial: scrape Inner Warden’s /metrics endpoint with Prometheus and build a Grafana dashboard with events, incidents, AI latency, and execution panels. Monitoring https://www.innerwarden.com/blog/detect-brute-force-success-login https://www.innerwarden.com/blog/detect-brute-force-success-login Sat, 21 Mar 2026 00:00:00 GMT Most tools alert on failed SSH logins. Almost none alert when a brute-forced IP then logs in successfully. That’s a compromise, not just an alert. Threat Detection https://www.innerwarden.com/blog/jemalloc-rust-memory-management https://www.innerwarden.com/blog/jemalloc-rust-memory-management Sat, 21 Mar 2026 00:00:00 GMT The story of how glibc malloc fragmentation caused our Rust daemon to grow to 1.3GB under bot traffic, and how jemalloc fixed it with 3 lines of code. Engineering https://www.innerwarden.com/blog/sudo-abuse-mitre-attack-detection https://www.innerwarden.com/blog/sudo-abuse-mitre-attack-detection Sat, 21 Mar 2026 00:00:00 GMT Complete reference: SUID manipulation, SSH key injection, cron persistence, log tampering, and 7 more privilege abuse categories with MITRE ATT&CK IDs. Threat Detection https://www.innerwarden.com/blog/fake-bot-detection https://www.innerwarden.com/blog/fake-bot-detection Thu, 19 Mar 2026 00:00:00 GMT Attackers disguise as Googlebot to bypass security. Learn how reverse DNS verification catches fakes and why user-agent alone is not enough. Bot Security https://www.innerwarden.com/blog/openclaw-integration https://www.innerwarden.com/blog/openclaw-integration Thu, 19 Mar 2026 00:00:00 GMT How Inner Warden protects OpenClaw agents from executing dangerous commands, and how OpenClaw keeps Inner Warden healthy in return. Integration https://www.innerwarden.com/blog/suricata-automated-response https://www.innerwarden.com/blog/suricata-automated-response Wed, 18 Mar 2026 00:00:00 GMT Connect Suricata IDS alerts to automatic firewall blocking. Inner Warden promotes IDS alerts to incidents, AI decides, firewall blocks. The complete alert-to-block pipeline. Network IDS https://www.innerwarden.com/blog/docker-container-security https://www.innerwarden.com/blog/docker-container-security Wed, 18 Mar 2026 00:00:00 GMT Monitor Docker containers for OOM kills, rapid restarts, and escape attempts. Automatically pause compromised containers with a TTL-based recovery. Container Security https://www.innerwarden.com/blog/protect-ai-agents-server https://www.innerwarden.com/blog/protect-ai-agents-server Wed, 18 Mar 2026 00:00:00 GMT AI agents run commands on your server. Inner Warden's check-command API validates commands before execution, scoring risk and blocking dangerous operations. AI Agent Security https://www.innerwarden.com/blog/credential-stuffing-protection https://www.innerwarden.com/blog/credential-stuffing-protection Tue, 17 Mar 2026 00:00:00 GMT Understand the difference between credential stuffing and brute-force attacks. Learn how to detect many-username attacks from a single IP and block them automatically. SSH Security https://www.innerwarden.com/blog/telegram-server-security-alerts https://www.innerwarden.com/blog/telegram-server-security-alerts Tue, 17 Mar 2026 00:00:00 GMT Set up real-time Telegram notifications for server security events. Bot commands, inline approve/deny buttons, and AI-powered conversations about your server's status. Notifications https://www.innerwarden.com/blog/server-attack-24-hours https://www.innerwarden.com/blog/server-attack-24-hours Tue, 17 Mar 2026 00:00:00 GMT A real 24-hour narrative of attacks against a public VPS: SSH brute-force, web scanners, credential stuffing, and honeypot captures. All blocked automatically. Real-World Security https://www.innerwarden.com/blog/ai-security-without-root https://www.innerwarden.com/blog/ai-security-without-root Tue, 17 Mar 2026 00:00:00 GMT Inner Warden's AI isolation model: the model reads data and returns JSON recommendations, Rust validates and executes. The model never sees a shell. Even a compromised model cannot harm your server. AI Safety https://www.innerwarden.com/blog/open-source-server-security-2026 https://www.innerwarden.com/blog/open-source-server-security-2026 Mon, 16 Mar 2026 00:00:00 GMT A practical overview of the best open source security tools for Linux servers in 2026: Falco, Suricata, osquery, fail2ban, and Inner Warden. How they work together in a unified stack. Security Stack https://www.innerwarden.com/blog/detect-port-scanning https://www.innerwarden.com/blog/detect-port-scanning Mon, 16 Mar 2026 00:00:00 GMT Learn what port scanning is, why attackers do it, how to detect it with sliding-window analysis, and how to automatically block scanners at the firewall. Network Security https://www.innerwarden.com/blog/detect-web-scanners https://www.innerwarden.com/blog/detect-web-scanners Mon, 16 Mar 2026 00:00:00 GMT Detect automated web vulnerability scanners like Nikto, sqlmap, and Nuclei using user-agent signatures and HTTP error flood analysis. Auto-block and rate-limit via nginx. Web Security https://www.innerwarden.com/blog/monitor-sudo-abuse https://www.innerwarden.com/blog/monitor-sudo-abuse Mon, 16 Mar 2026 00:00:00 GMT Detect sudo abuse patterns like burst privileged commands and lateral movement. Automatically suspend sudo access with a TTL and get Telegram alerts. Privilege Escalation https://www.innerwarden.com/blog/detect-ssh-brute-force https://www.innerwarden.com/blog/detect-ssh-brute-force Sun, 15 Mar 2026 00:00:00 GMT Learn how to detect SSH brute-force attacks in real time, why fail2ban alone is not enough, and how to set up automated blocking with AI-powered confidence scoring. SSH Security https://www.innerwarden.com/blog/ssh-honeypot-setup https://www.innerwarden.com/blog/ssh-honeypot-setup Sun, 15 Mar 2026 00:00:00 GMT Set up an LLM-powered SSH honeypot that responds to attackers naturally, captures credentials and commands, and auto-blocks after the session ends. Honeypots https://www.innerwarden.com/blog/threat-intelligence-sharing https://www.innerwarden.com/blog/threat-intelligence-sharing Sun, 15 Mar 2026 00:00:00 GMT Automatically report blocked IPs to AbuseIPDB and push firewall rules to Cloudflare WAF. Detect, block, report, and protect other servers from the same attacker. Threat Intelligence https://www.innerwarden.com/blog/fail2ban-vs-innerwarden https://www.innerwarden.com/blog/fail2ban-vs-innerwarden Sun, 15 Mar 2026 00:00:00 GMT A fair comparison of fail2ban and Inner Warden. Both block IPs from SSH brute-force, but Inner Warden adds stateful detection, AI triage, dashboards, Telegram alerts, honeypots, and threat intelligence sharing. Comparison