What is SSL Labs?
SSL Labs is Qualys' free online SSL/TLS security testing service that performs deep analysis of SSL web server configurations on the public Internet to identify security vulnerabilities and grade SSL implementations. You can set up Agent Analytics to see when SSL Labs visits your website.
Category
| Example User Agent | Qualys SSL Labs (https://www.ssllabs.com/about/assessment.html) |
| Operated By | Qualys |
| Source | Official Website |
| Triggered By | Scheduled or requested scan |
| Used for AI Model Training | Not expected |
| Affects AI Chat & Search Visibility | Not directly |
| Expected To Follow Robots.txt | Yes |
Why Is SSL Labs Visiting My Website?
SSL Labs is scanning your site for vulnerabilities, either as part of an internet-wide sweep or because someone requested an assessment of your domain. Recurring visits often indicate that a monitoring service has added your site to its checks.
Should I Block SSL Labs?
Usually not, unless you already run your own security scans and want cleaner logs. SSL Labs checks for exposed vulnerabilities, and some services report their findings to site owners at no cost. For context, 7% of the top websites we track currently have robots.txt rules for SSL Labs.
How Do I Block SSL Labs Using Robots.txt?
Add this rule to your robots.txt file to block SSL Labs from accessing your website, or use Automatic Robots.txt to block all security scanners at once. You can customize which pages are blocked by swapping out / for a different path.
User-agent: SSL Labs # https://knownagents.com/agents/ssl-labs
Disallow: /Insights for SSL Labs
As of October 29, 2026, this data reflects agent visits measured across thousands of websites using Agent Analytics, combined with daily scans of the top 1000 websites and their robots.txt files.
Robots.txt Compliance
Country of Origin
Robots.txt Blocked Percentage
SSL Labs Traffic
Frequently Asked Questions
What Traffic Patterns Should I Expect From SSL Labs?
SSL Labs's cadence depends on how the scan is configured. Continuous monitoring may run daily or hourly, while a one-time or internet-wide scan may sweep once and disappear.
Does SSL Labs Follow Robots.txt Rules?
SSL Labs is expected to follow robots.txt rules, so a disallow rule is the appropriate first step if you want to block it. Automatic Robots.txt can add and maintain that rule, while Agent Analytics lets you verify whether SSL Labs respects it.
Is SSL Labs Used for AI Model Training?
Not ordinarily. SSL Labs is not categorized as an AI training scraper or data provider, so AI model training is not its expected purpose.
Does Blocking SSL Labs Affect AI Search or Citations?
Not directly. SSL Labs's expected purpose is not to supply an AI search index or retrieve pages for AI-generated answers.
Does SSL Labs Access Private Content?
It deliberately looks for exposed private content. SSL Labs tests login pages, admin panels, and API endpoints for vulnerabilities. Probing does not mean it gained access, but you should expect requests to sensitive paths in your logs.
How Can I Verify a Request From SSL Labs?
Agent Analytics tracks SSL Labs visits in real time. You can also check your server logs for requests whose user-agent string contains "SSL Labs". Look for bursts of requests to uncommon paths that ordinary visitors rarely access. Because SSL Labs does not publish a verification method, any client can claim its identity and a log match is only a clue.
How Is SSL Labs Different From Other Qualys Agents?
Qualys operates separate agents for different purposes, so each agent should be evaluated and controlled independently.
- Qualys: Qualys is a developer helper operated by Qualys.
- Qualys SSL Scanner: Qualys SSL Scanner is a developer helper operated by Qualys.
- cf-qualys-scanner: cf-qualys-scanner is a cloud-based web application security scanner that provides automated crawling and vulnerability testing to identify security flaws including XSS, S…