Continuous Web Application Security Testing
Web Attack Simulation with HTTP Proof
Nautillo Pro runs proof-based web attack simulations against your application and delivers HTTP evidence for every confirmed vulnerability. Use it to validate releases, catch regressions, and focus teams on what is actually exploitable.
Multi-Step Attack Chains
See the attacker's full progression, from credential entry to data exposure, with labeled steps and proof.
Safe Simulation
All attack techniques use non-destructive payloads designed to prove impact without causing harm.
Actionable Reports
Get detailed remediation guidance with evidence, not just a list of theoretical vulnerabilities.
Continuous Testing
Re-run after each meaningful release to catch regressions before attackers do.
How the Web Attack Simulator Works
Nautillo Pro follows attacker methodology with safety controls, HTTP evidence, and reports built for remediation instead of inflated findings counts.
Verify Domain Ownership
Add a DNS TXT record to prove you own or are authorized to test the target domain.
Configure and Launch
Set authentication credentials, define scope, and start the attack simulation.
Review Attack Chains
Get multi-step attack chains showing the attacker's progression from entry to impact, with labeled steps and proof.
Web Attack Simulation Techniques
Core exploit paths are covered on every plan, with broader scope and deeper attack paths available as plans expand.
SQL Injection Testing
Error-based, union-based, and time-based blind probes across URL parameters, POST form fields, and JSON API endpoints, with baseline latency comparison to confirm blind injection.
Cross-Site Scripting (XSS)
Script injection attempts to identify client-side security gaps.
Authentication Bypass
Session fixation, token misuse, and auth flow probing to find access control weaknesses.
Command Injection
Output-based (unique echo token, id/whoami, /etc/passwd), error-based (shell error messages), and time-based blind probes with baseline latency comparison across GET params, POST forms, and JSON APIs.
Directory Traversal
Path manipulation tests to detect unauthorized file access vulnerabilities.
Logic Abuse Detection
Authorization breaks and workflow manipulation to find business logic flaws.
Attack Simulator Technical Details
Information for system administrators who noticed our simulator in their logs
Why am I seeing this in my logs?
If you're seeing requests from Nautillo Pro's attack simulator in your server logs, it means someone with verified ownership of your domain has authorized a security simulation. This is a legitimate, authorized security test.
User-Agent
IP Ranges
To ensure accurate simulation results, allowlist these IP ranges in your firewall and WAF.
Questions or Concerns?
If you believe unauthorized testing is occurring, or if you have questions about a simulation against your domain, please .
Web Attack Simulation FAQ
Common questions about web attack simulation and how Nautillo Pro fits into a modern release workflow.
What is a web attack simulation?
How does a web attack simulator differ from a vulnerability scanner?
Is the attack simulation safe for production systems?
What do I need to run a web attack simulation?
How do I allowlist the attack simulator?
What types of vulnerabilities can the web attack simulation platform detect?
Ready to Test Your Defenses?
Start your first simulation for free. See what is actually exploitable in your application and get remediation guidance backed by HTTP proof.