Casco (YC X25)

Founded 2025

Continuously test web apps, APIs, and cloud infrastructure for exploitable security vulnerabilities

Pricing model

Demo

You can use Casco to continuously test web applications, APIs, cloud environments, and AI interfaces for exploitable security flaws. Autonomous security agents explore your running software, establish attack paths, and collect reproducible evidence. Casco can navigate complex multi-factor authentication, API endpoints, and multi-tenant setups safely without causing service interruptions. Once developers deploy a fix, Casco replays the exact original attack vector to verify remediation. It also produces exportable penetration test reports designed to pass technical security compliance audits and enterprise procurement evaluations.

What Casco (YC X25) does

Run automated black-box penetration tests on live web applicationsMap application endpoints, databases, and authentication routesVerify exploitable vulnerabilities with reproducible request proofRetest patched code by replaying the exact previous exploitTriage external vulnerability reports and check for real-world impactExport standardized pentest documentation for procurement and compliance auditsTrack security findings directly inside Jira or Linear ticketsContinuously maps running attack surfaces including APIs, authentication, and servicesAutonomous testing across multi-role and multi-tenant setups through MFA and SSOCaptures reproducible exploit evidence with exact requests and proof of concept codeAutomatically replays original attack paths to confirm vulnerability remediationTriages incoming security reports and tests reported claims safelyGenerates compliance-ready penetration test reports for SOC 2 and ISO 27001Network-level scope controls and fixed IP addresses to prevent production downtime