I scanned dozens of AI-built SaaS products this week. Here is what the data actually looks like.

I built a security scanner and opened it to the public this week. Founders started submitting their domains. The results were not what I expected.
Not because they were bad. Because they were consistent.
Score 0. Paying customers. Every check failed.
Score 1. User data being collected. Product in production.
Score 9. Financial SaaS. Email domain spoofable. Stack fully exposed. Headers absent.
Score 28. Founder had validated with real users, iterated on feedback, was about to close first paying customers. Had no idea.
These are not outliers. This is the baseline.
The founders are not careless. They are not lazy. They built something that works, shipped it, and moved on to distribution. Nobody in that workflow stopped to ask what the product looks like from the outside.
What does the outside look like? It looks like DNS misconfigurations that let anyone send emails pretending to be your domain. Security headers absent, meaning a single injected script can steal every user session on your platform. Your tech stack announced in every HTTP response, giving attackers a roadmap. Subdomains pointing nowhere, ready for takeover. Secrets sitting in public JavaScript bundles that any visitor can read.
None of this is in the code. None of this shows up in a PR review. None of it breaks anything. It just sits there, invisible, until someone who knows where to look finds it.
I built Mosai Scanner to close that gap. It runs 78 black-box checks against any live domain in 60 seconds. No code access. No install. No agent running in your repo. Just your URL and what any attacker would see from the outside.
The free scan runs 5 checks and shows you the surface. The full report runs all 78 and shows you everything, with specific fixes for each finding.
If you have shipped an AI-built SaaS and never checked what it looks like from the outside, that is the step you are missing.
How are you handling security on your own products before you scale?