Otto scans any live site or app and shows exactly where it's exposed, down to the file and line, then hands you the fix.
By running an audit you confirm you are authorized to test this site.
No install, no account, no source code. Just the URL.
Drop in a live site or app. Otto looks at it exactly the way an attacker would.
In seconds, see the exposure score from 1 to 10 and where the risk sits. Free.
For $9.99, get every finding located precisely, with the exact fix, line by line.
Otto goes after the exact mistakes attackers find first.
API keys, tokens and private keys sitting in client code.
Supabase & Firebase rules that let anyone read or write data.
Public APIs and storage buckets that should never be reachable.
Missing protections that open the door to XSS and request abuse.
Broken authorization and business-logic holes scanners miss.
Exposed .env, .git and source maps that hand over the code.
Every finding with the exact file and line, the vulnerable code, and the code to fix it.
/rest/v1/ · users, orders, payments
app.[hash].js · line ~1
Access-Control-Allow-Origin: *
One audit, one price. No subscription, no surprises.
No. Otto only needs the URL: no account, no code upload, no agent.
Only audit sites and apps you own or are authorized to test. Otto probes actively, but never alters or stores any data.
Everything shipped to the browser: client code, configuration, public APIs and database rules, which is exactly where fast-built apps leak.
No. Results live for one hour and are then erased. Nothing is kept.
Yes. Many users run Otto on the sites of clients they're authorized to test, then hand over the branded PDF as a paid security audit.