What is SiteLockSpider?
SiteLockSpider is SiteLock's web scanning service that crawls websites to detect malware, malicious code, and security vulnerabilities for website protection. You can set up Agent Analytics to see when SiteLockSpider visits your website.
Category
| Example User Agent | SiteLockSpider [en] (WinNT; I ;Nav) |
| Operated By | SiteLock |
| 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 SiteLockSpider Visiting My Website?
SiteLockSpider 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 SiteLockSpider?
Usually not, unless you already run your own security scans and want cleaner logs. SiteLockSpider 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 SiteLockSpider.
How Do I Block SiteLockSpider Using Robots.txt?
Add this rule to your robots.txt file to block SiteLockSpider 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: SiteLockSpider # https://knownagents.com/agents/sitelockspider
Disallow: /Insights for SiteLockSpider
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
Frequently Asked Questions
What Traffic Patterns Should I Expect From SiteLockSpider?
SiteLockSpider'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 SiteLockSpider Follow Robots.txt Rules?
SiteLockSpider 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 SiteLockSpider respects it.
Is SiteLockSpider Used for AI Model Training?
Not ordinarily. SiteLockSpider is not categorized as an AI training scraper or data provider, so AI model training is not its expected purpose.
Does Blocking SiteLockSpider Affect AI Search or Citations?
Not directly. SiteLockSpider's expected purpose is not to supply an AI search index or retrieve pages for AI-generated answers.
Does SiteLockSpider Access Private Content?
It deliberately looks for exposed private content. SiteLockSpider 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 SiteLockSpider?
Agent Analytics tracks SiteLockSpider visits in real time. You can also check your server logs for requests whose user-agent string contains "SiteLockSpider". Look for bursts of requests to uncommon paths that ordinary visitors rarely access. Because SiteLockSpider does not publish a verification method, any client can claim its identity and a log match is only a clue.
How Is SiteLockSpider Different From Other SiteLock Agents?
SiteLock operates separate agents for different purposes, so each agent should be evaluated and controlled independently.
- SiteLock: SiteLock is a developer helper operated by SiteLock.