Find and fix weaknesses
Use security tools with judgment
Combine automated scanning with manual review, reproduce findings, and fix root causes instead of chasing unverified alerts.
8 minute lesson
Scanners are useful assistants. They do not understand the complete product or business rule.
Run tools only against systems you own or have permission to test. Reproduce each important finding safely, inspect the affected path, and rank it using context. Tune noisy rules, but do not hide a result because it is inconvenient.
A scanner reports a reflected value in JSON as XSS. The frontend renders that field with textContent, so the reported path does not execute script.
Calling this a false positive without reproducing the browser flow is also a mistake. Tools find signals; the complete data path determines impact.
Choose one scanner finding and reproduce the exact source-to-sink path in an authorized environment. Save the request, response, execution result, and a regression test whether you confirm or reject the finding.
Lesson completed