Security headers with helmet (baseline hardening)

Most security issues aren’t exotic—they’re missing headers and unsafe defaults. helmet gives a sensible baseline: headers that reduce clickjacking risk, tighten content-type sniffing, and improve general browser hardening. I still configure CSP explicitly (because it’s app-specific), but helmet handles a lot of the boring stuff consistently across routes. The important thing is understanding what you’re enabling so you don’t break legitimate behavior (iframes, cross-origin resources). I usually roll it out in staging first, then enforce in production once I’m confident. Baseline hardening isn’t glamorous, but it’s a cheap way to reduce risk.