CASSI — Continuous Application Security Scanning Intelligence
AI-powered vulnerability discovery.
Running entirely on your machine.
The threat landscape has changed. Attackers are already using AI to discover and exploit vulnerabilities faster than human defenders can keep up. CASSI puts that same capability in your hands — with a critical difference: your data never leaves your machine.
The new reality
AI-assisted attack tooling is here. Automated reconnaissance, intelligent exploit chaining, and machine-speed vulnerability discovery are no longer theoretical — they're being used against your applications and infrastructure right now. Defenders need equivalent tooling. But most AI-powered security products require sending your vulnerabilities, source code, and infrastructure details to someone else's cloud.
That's an unacceptable trade.
What CASSI does
CASSI pairs a specially tuned local AI model with the Nuclei vulnerability scanner to give you AI-speed vulnerability discovery without the AI-cloud exposure. Tell the agent your target in plain language. It fingerprints your stack, selects the right templates from Nuclei's library of thousands, orchestrates the scan, and turns raw output into prioritized, stack-aware findings you can act on.
The AI is trained specifically for security workflows — template selection, result interpretation, remediation guidance, custom template generation — and runs entirely on your workstation.
Local-first, by design
Every part of CASSI that matters runs on your machine:
The AI model runs locally
No prompts, no findings, no source code, no infrastructure details ever transmitted to a third party.
Scans run locally
Nuclei executes from your workstation against targets you control.
Findings stay local
Vulnerability data lives in a project folder you own. No telemetry by default.
No cloud dependency
CASSI works fully offline. Air-gapped environments supported.
When you find a critical vulnerability, the last thing you want is that finding sitting in someone else's inference logs. CASSI makes sure it never does.
Who it's for
Security professionals
Pentesters running assessments where client confidentiality is non-negotiable.
Developers & small teams
Checking your applications before shipping — without leaking pre-disclosure vulnerabilities.
IT & network teams
Protecting internal infrastructure without exposing it to external services.
How you'll use it
CASSI Desktop
Native application for macOS, Windows, and Linux. Everything local.
CASSI Server
Self-hosted deployment for teams. Runs inside your perimeter. Same local-only guarantees.
Why this matters now
The organizations that adopt local AI-powered defense will keep their vulnerability data private. The ones that adopt cloud AI-powered defense are handing their attack surface to whoever they trust with that data.
CASSI is built for people who understand which side of that line they need to be on.