MEDIUM Missing HSTS header
First-time visitors on hostile networks can be MITM'd before redirect.
A read-only public-posture snapshot. We hit appcheck-ng.com the way any anonymous visitor would, recorded what came back, and graded it against modern best practices. This is not a pen test — it covers maybe 5% of what a real assessment would look at. If you own this domain and want the other 95%, the free scan is below.
Across 183 publicly-known SaaS targets we've snapshotted, 61% sit at grade B, and 39% score higher. The grade is absolute, not relative — but seeing where peers cluster makes it concrete.
First-time visitors on hostile networks can be MITM'd before redirect.
No defense-in-depth against XSS or third-party script abuse.
Page can be iframed, enabling clickjacking.
Full URLs may leak via Referer header to third parties.
The full free scan runs ~600 nuclei templates against appcheck-ng.com, checks the authenticated TLS surface, audits headers and DNS, and emails you a PDF with prioritized findings + fix instructions. Three minutes, no signup.
Run the free scan →This snapshot is a public read-only view, like loading the site in a browser. We did not run vulnerability templates, did not test authenticated endpoints, did not attempt to bypass any controls. The data shown is observable by anyone with curl. If you own appcheck-ng.com and want this page removed or refreshed, email security@thecybergrid.com.