Grade B — 1 to fix, 4 minor.
passive scan · the deep checks need you signed in · scanned 3d ago
This is a passive website security report for demo.rixner-systems.de, graded B (85/100). We checked its SSL certificate, HTTP security headers, DNS records, email spoofing protection and publicly exposed files — the same surface a browser and a search engine already see.
We found 5 issues on this scan — each has a plain-English explanation and a copy-paste fix below.
Not your site?
The domain rixner-systems.de publishes no SPF record. SPF is the DNS record that lists which mail servers are allowed to send email as your domain. Without it, spam filters have no way to tell your real mail from a forgery, and messages you do send are more likely to land in spam.
You have a Content-Security-Policy, which is great — but it contains a wildcard source or allows 'unsafe-inline'/'unsafe-eval' in script-src. Those let injected scripts execute, which is most of what a CSP is meant to stop.
Your responses advertise the exact software you run (Server: nginx/1.28.3 (Ubuntu)). It's not a hole by itself, but it hands attackers a shortcut: they can look up known vulnerabilities for that precise version instead of probing blindly.
rixner-systems.de is not protected by DNSSEC. DNSSEC signs your DNS records so resolvers can detect a forged answer — without it, an attacker who can poison DNS could point your domain at their own server without touching anything you control.
rixner-systems.de publishes no CAA records. CAA tells the world which certificate authorities are allowed to issue HTTPS certificates for your domain. Without it, any CA can be persuaded to issue a cert for your domain, which widens the door to mis-issuance.
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