There’s a special kind of security failure that doesn’t come from complex exploits or zero-days. It comes from your API politely introducing itself to the entire internet: “Hi, I’m nginx 1.18.0.”
This isn’t advanced hacking. It’s basic fingerprinting — and it’s how attackers decide whether you’re worth attacking at all. Exposing server versions turns vulnerability scanning into shopping with a checklist: tech, version, CVE, automate. Teams forget this because it’s boring, not because it’s hard. No alerts. No crashes. Just a quiet little header waiting for the wrong person to notice. I added this check to Rentgen because people don’t forget hard things — they forget obvious ones. And those are the ones that usually bite first.
👉 Read more: https://rentgen.io/api-stories/server-header-does-not-expose-version.html
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Repo if you want to look inside: github.com/LiudasJan/Rentgen