qsa.sh

External security scan of your own IP, in your terminal

Developer ToolsBusiness IntelligenceSecurity

▲ 0 votesLaunched Jul 28, 2026

Daily #9Weekly #40

Run curl qsa.sh for a one-command external security scan of your server's own public IP — naabu, nmap + vulners, and nuclei map your open ports, service versions, and known CVEs, streamed straight to your terminal in ~30 seconds. See exactly what the internet sees of your host: no account, nothing stored. Free scans run live; paid Pro (all 65,535 ports, async) and one-time Deep (the full nuclei firehose, emailed) dig deeper uncovering vulnerabilities below the surface.

AI Analysis

📝 Summary

qsa.sh provides a one-command external security scan of your server's public IP via 'curl qsa.sh'. It integrates naabu for port discovery, nmap with vulners for service versions and CVEs, and nuclei for vulnerability scanning, streaming results to your terminal in ~30 seconds. USPs include zero accounts, no data storage for privacy, free live basic scans, paid Pro for all 65k ports with async support, and Deep one-time scans delivering full results by email. It solves pain points like complex tool setup, lack of quick external visibility into hosts, and time-intensive security audits for devs and admins. Value proposition: fast, private, actionable insights into what the internet sees without infrastructure overhead.

📈 Market Timing

In 2025-2026, with escalating cyber threats, widespread cloud adoption, DevSecOps integration, and regulatory pushes for vulnerability management (e.g., stricter disclosure rules), timing is favorable. User demand for simple, no-setup security tools is rising amid growing attack surfaces from remote infrastructure. This CLI-first, privacy-focused scanner aligns perfectly with trends toward accessible, proactive security. Excellent Timing.

✅ Feasibility

High. Technical difficulty is low by wrapping mature open-source tools (naabu, nmap, nuclei). Development and operation costs are moderate, centered on compute for concurrent scans and email delivery. Minimal supply chain risks; compliance is manageable as scans are user-initiated on own IPs. Strong scalability via cloud async processing and good team fit for security-focused developers.

🎯 Target Market

Main segments: Developers, sysadmins, DevOps engineers, and security professionals (ages 25-45, technical backgrounds). Industries: Software/SaaS, IT services, cloud hosting. Primarily global with concentration in US, Europe, and Asia tech hubs. TAM for cybersecurity tools ~$200B by 2026; SAM for external vuln scanning services ~$5B; SOM for CLI/none-setup niche ~$100-200M. Core pains: cumbersome scanning toolchains and opaque external exposure. High willingness to pay for Pro/Deep among serious users needing deeper insights.

⚔️ Competition

Medium. Direct competitors: 1. HackerTarget (hackertarget.com), 2. Pentest-Tools.com, 3. Shodan (shodan.io), 4. Censys (censys.io). Advantages: seamless no-account terminal integration, combined multi-tool output (nmap+nuclei), strong privacy focus, fast free tier. Disadvantages: lacks broad platform features like continuous monitoring or UI dashboards; paid tiers needed for full depth; potential rate limits on free scans. Strong differentiation via simplicity and 'what the internet sees' terminal workflow vs more complex enterprise tools.

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