State of the Czech web

Aggregated security data from websites scanned with our own scanner. The page is live — numbers are recalculated as new scans come in.

We show the share of domains with a critical vulnerability, the most common critical and high findings, a breakdown by segment and the average score. The headline number is the share of domains with a critical finding, not the share with any finding at all — that one is close to 100 % but includes minor issues such as a missing header.

The methodology is passive: we download only what a site voluntarily serves to an ordinary visitor, we respect robots.txt and we never exploit a vulnerability. We publish aggregates only — no individual domain appears on the page.