zoom.us

Readiness by lane

Green: zoom.us. Thin bar: Workplace Productivity peer median.

Priority fixes for zoom.us

Ordered by impact and by how common each practice is among peers.

1. Priority 1 · Harden

   HSTS kept for at least a year

   Observed: Strict-Transport-Security was sent with a max-age of 180 days, below the one-year benchmark.

   Why it matters: HSTS tells browsers to use HTTPS for your host on every later visit, which removes the window where a first HTTP request can be intercepted.

   What to do: Send Strict-Transport-Security on HTTPS responses. Start with a short max-age (for example 300 seconds), confirm every subdomain works over HTTPS, then raise it in steps to 31536000. Add includeSubDomains only when all subdomains are HTTPS. HSTS preload is optional and hard to undo; hstspreload.org itself does not recommend it by default.

   On Cloudflare: Enable HSTS under SSL/TLS > Edge Certificates > HTTP Strict Transport Security and raise max-age gradually.

   59% of Workplace Productivity peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.

   Guide: HTTPS and TLS Guide for Website Owners

2. Priority 2 · Accelerate

   No render-blocking scripts in <head>

   Observed: The homepage <head> loaded 3 external scripts without async or defer.

   What to do: Add defer to scripts that need the DOM, async to independent ones such as analytics, or move them to the end of the body.

   42% of Workplace Productivity peers do this.

   Guide: Control Third-Party Scripts Before They Control Your Page

3. Priority 3 · Harden

   Framing restricted

   Observed: The homepage did not send frame-ancestors or X-Frame-Options, so other sites may frame it.

   What to do: Send Content-Security-Policy: frame-ancestors 'self' (or a list of trusted origins). X-Frame-Options: SAMEORIGIN covers older browsers.

   On Cloudflare: Add the header with a response header transform rule.

   52% of Workplace Productivity peers do this.

   Guide: A Practical Website Health Check for Owners

4. Priority 4 · Harden

   Content Security Policy present

   Observed: The homepage response did not include a Content-Security-Policy header.

   What to do: Start with Content-Security-Policy-Report-Only to see what would break, tighten the policy over a few weeks, then enforce it.

   41% of Workplace Productivity peers do this.

   Guide: Payment Security and PCI DSS: What Website Owners Need to Know

What zoom.us already does well

Practices fewer than half of Workplace Productivity peers use.

• security.txt publishedsecurity.txt with a contact found.16% of peers
• CAA records limit who can issue certificatesCAA limits issuance to amazon.com, digicert.com, godaddy.com and others.18% of peers
• HTTP/3 advertisedHTTP/3 advertised.27% of peers

What we saw

Homepage checked

https://zoom.us/

Homepage response

HTTP 200, after 1 redirect

TLS

TLSv1.3, HTTP/2

Certificate

DigiCert, 365-day validity, expiring 2026-12-29

CDN or edge

Cloudflare

DNS operators

Amazon Route 53

HSTS

max-age 180 days, includeSubDomains

DMARC policy

p=reject

Homepage HTML

311 KB, gzip

Images on homepage

112 (jpg 47, svg 39, webp 24, png 5)

Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.

Stack and providers

Seen in the homepage response, certificate and DNS. Provider pages compare how their customers configure the same checks.

All 31 checks

Select a gap for the method and fix. How each check works

Compare with other Workplace Productivity sites

• employeenavigator.com76
• factsmgt.com77
• harri.com76
• wellnessliving.com79
• zoho.com79

Workplace Productivity readiness benchmark