Technology
Express detection
Category: Backend Framework. Themerella detects this technology from public website evidence and shows confidence in the report.
Detection evidence
How Themerella detects Express
- x-powered-by response header that includes Express
- Node/Express-style public error or framework hints when exposed
- Supporting API/backend evidence from response behavior
Report value
Every detected technology should include category, confidence, evidence, and practical risk/context so the result is useful beyond logo recognition.
False-positive boundary
What to verify before acting on Express evidence
- Many Express apps disable x-powered-by, and headers can be spoofed.
- An Express hint does not identify frontend framework, database, or hosting by itself.
Next workflow
- Confirm whether the Express header is still exposed in production.
- Review security headers and error leakage findings.
- Consider disabling framework fingerprinting after operational validation.