Run a practical pre-deployment security check on a public website or app before launch. DeployPass reviews security headers, CORS, cookies, mixed content, frontend exposure and other observable deployment risks—without exploit attempts.
Public-surface checks only. No login, brute force, port scan or credential testing.
A deployment security check should focus first on mistakes that become public the moment a build ships. A useful security checklist before deployment combines transport protection, browser security controls, cross-origin behavior, cookie settings and accidental frontend exposure. DeployPass turns those observable signals into a short review you can run before production and repeat after a fix.
Review Content-Security-Policy, HSTS, X-Content-Type-Options, clickjacking controls and Referrer-Policy. Missing headers are not automatically vulnerabilities, but they can remove useful browser defenses or reveal that production hardening was skipped. Treat each result in the context of the application, then verify the final response after deployment.
Check cross-origin response behavior and Permissions-Policy for unexpectedly broad access. Public APIs may intentionally allow multiple origins, while authenticated endpoints usually need tighter rules. Pay special attention when credentials and broad origins appear together, and confirm that browser feature permissions match what the product actually needs.
Confirm the final page uses HTTPS and review Secure, HttpOnly and SameSite cookie signals. Also look for HTTP resources referenced by an HTTPS document. Mixed content can weaken transport guarantees, create browser warnings or cause active resources to be blocked after a release.
Review public environment hints, source maps, debug markers and client-visible deployment details. Frontend code is public by nature, so the goal is not to hide ordinary JavaScript. The goal is to avoid shipping secrets, internal endpoints, unnecessary debugging information or configuration that should never have reached a public build.
Inspect server and framework disclosure, response headers and scan coverage. Version banners are rarely a vulnerability on their own, but unnecessary disclosure can help fingerprint a stack. A pre-deployment security check is most useful when it highlights these low-cost hardening opportunities before they become permanent production defaults.
Security review should be repeatable. Fix high-signal findings, deploy the change and run the same check again. A re-scan confirms that the public response actually changed and helps catch regressions introduced by proxies, hosting configuration, CDN rules or a production-only environment.
A production release changes what the internet can observe. Headers may differ behind a CDN, cookies can gain different attributes, environment variables can be bundled into frontend assets, and a staging-only configuration can accidentally become public. Running a pre-deployment security check creates a simple checkpoint between “the build works” and “the build is ready to ship.”
For small teams, indie makers and AI-assisted development workflows, this matters because infrastructure decisions are often spread across application code, hosting dashboards and edge configuration. A developer may correctly configure a framework while a proxy strips the header later. The most useful check therefore looks at the public response rather than only reviewing source code.
DeployPass is designed for that final public-surface review. It does not log in or attack the target. Instead, it checks what a normal visitor can observe and gives you a practical list of items to review before launch.
Start with a staging, preview or production URL that is publicly reachable and that you are authorized to test. A production-like environment gives more useful results because CDN, proxy, TLS and hosting behavior can differ from localhost.
Prioritize transport problems, unsafe cross-origin combinations, missing protections that matter to your application, insecure cookies and exposed deployment information. Do not chase a perfect score simply because a header can be added.
A finding may belong in application middleware, a hosting configuration file, a reverse proxy or a CDN rule. Make the smallest change that matches the intended behavior, then test the application rather than blindly copying a strict policy.
After deployment, scan the final public URL again. This confirms that the browser-facing response contains the intended change. It also catches cases where a platform overrides or removes a setting between your code and the user.
This page is designed for developers and teams that want a fast website security test before deployment. Passive scanning can identify browser-facing misconfiguration and accidental public exposure, but it cannot prove an application is vulnerability-free. Authentication flaws, authorization bugs, business-logic issues, database weaknesses and server-side vulnerabilities may require authenticated testing, code review or a professional penetration test.
That distinction is important when interpreting a clean result. A high DeployPass score means the observable checks performed here did not reveal many problems; it does not certify the application as secure. Use the result as a release-quality signal and a starting point for deeper security work where the risk justifies it.
If you want a broader public-facing scan framed around vulnerability discovery, use the Website Vulnerability Scanner. For a single control, use the Security Headers Checker, CSP Checker, CORS Checker, Mixed Content Checker or Permissions Policy Checker.
A deployment security check is a review performed before or around a production release to catch security misconfigurations and public exposure before users reach the application. It can include HTTPS, browser security headers, CORS, cookies, mixed content and frontend deployment signals. DeployPass focuses on passive checks that can be observed from a public URL.
Start with HTTPS and security headers, then review CORS, cookie attributes, mixed content, browser permissions, source maps, debug information and obvious environment leakage. For applications with accounts or sensitive data, add authentication, authorization, dependency, server-side and business-logic testing appropriate to the product.
Yes. The 19 passive checks and the checklist on this page provide a practical baseline for a public web release. Use it as a repeatable release gate rather than a compliance certificate. Teams with higher-risk applications should extend the checklist with code review, dependency scanning and authenticated security testing.
No. DeployPass performs passive public checks and does not attempt exploitation, credential attacks, brute force or port scanning. A penetration test is deeper and may actively probe application behavior, authentication, authorization and server-side weaknesses with explicit authorization.
Scan a publicly reachable environment you are authorized to review. A production-like staging environment is useful before launch because it can reveal configuration mistakes early. Re-scan the production URL after release because CDN, proxy, TLS and environment behavior can change between staging and production.