What is Qualys SSL Scanner?

Qualys SSL Scanner is a developer helper operated by Qualys. Agent Analytics can track when it visits your website.

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Expected Behavior

Qualys SSL Scanner's traffic is as regular as a cron job, because it usually is one. Uptime monitors hit the same endpoint every few minutes, while performance and audit tools run deeper scans on demand. Expect narrow, repetitive access to specific pages rather than crawling.

Overview

This data reflects agent visits measured across thousands of websites using Agent Analytics, combined with daily scans of the world's top 1000 websites and their robots.txt files.

How To Block Qualys SSL Scanner

Add this rule to your robots.txt file to request that Qualys SSL Scanner not access your website. You can customize which pages are blocked by swapping out / for a different path.

User-agent: Qualys SSL Scanner # https://knownagents.com/agents/qualys-ssl-scanner
Disallow: /

Frequently Asked Questions

Should I Block Qualys SSL Scanner?

Only if nobody you work with uses it. Qualys SSL Scanner is the kind of tool a team points at its own site for uptime checks, performance tests, and audits. If someone on your team relies on it, blocking it silently breaks their monitoring. Almost none of the top websites we track have robots.txt rules for Qualys SSL Scanner right now.

Does Qualys SSL Scanner Respect Robots.txt?

No. Qualys SSL Scanner is not expected to honor robots.txt, so a disallow rule only states your preference. Enforce the block with firewall or server rules, then confirm in Agent Analytics that its requests actually stop.

Does Qualys SSL Scanner Access Private Content?

Only if its owner sets that up. Monitoring tools check whatever they are configured to check, which can include staging sites and private health endpoints when a team grants access. Uninvited, Qualys SSL Scanner sees only public pages.

Why Is Qualys SSL Scanner Visiting My Website?

Someone pointed Qualys SSL Scanner at your site, most likely your own team. Uptime monitors, performance testers, and audit tools only visit the sites they are configured to watch.

How Can I Tell if Qualys SSL Scanner Is Visiting My Website?

Agent Analytics tracks Qualys SSL Scanner visits in real time alongside every other known AI agent, crawler, and scraper. You can also check your server logs for requests whose user agent string contains "Qualys SSL Scanner". Look for regular checks of the same pages or endpoints, often minutes apart. Keep in mind that Qualys SSL Scanner doesn't publish a verification method, so any client can claim its user agent string and a log match is a hint rather than proof.