STATUS IS UPWEBSITE READINESS
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Category benchmark · Snapshot 23 October 2026

Security & Monitoring: website readiness

31 configuration checks across 45 Security & Monitoring sites from the SID website catalog, with 12 individual profiles for sites in the Chrome UX Report top 50K.

Sites measured
45

all popularity bands

Median readiness index
66/100

all sites: 64

Profiles
12

top-50K sites

Weakest lane
Recover

lowest weighted score

Readiness by lane

Enable

82/100

All sites 77

Harden

58/100

All sites 56

Accelerate

64/100

All sites 64

Recover

9/100

All sites 10

Biggest gaps for Security & Monitoring sites

The checks with the most room to improve, weighted by impact.

  1. HSTS kept for at least a year

    42% observed · all sites 34%

    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.

    Guide: HTTPS and TLS Guide for Website Owners

  2. DMARC policy enforces quarantine or reject

    40% observed · all sites 39%

    Publish DMARC with p=none and a reporting address first, fix any legitimate senders that fail SPF or DKIM alignment, then move to quarantine and finally reject.

    Guide: A Practical Website Health Check for Owners

  3. security.txt published

    12% observed · all sites 7.1%

    Publish /.well-known/security.txt with at least Contact and Expires fields, as RFC 9116 requires, and review it before it expires.

    Guide: A Practical Website Health Check for Owners

  4. CAA records limit who can issue certificates

    18% observed · all sites 13%

    Publish CAA records naming every CA you actually use, including the CAs your CDN uses for managed certificates. Add an iodef contact if you want reports.

    Guide: HTTPS and TLS Guide for Website Owners

  5. Static files cached for 30 days or more

    47% observed · all sites 51%

    Give versioned (fingerprinted) CSS, JavaScript, fonts and images Cache-Control: public, max-age=31536000, immutable, and change the file name whenever the content changes.

    Guide: Browser Caching Guide for Website Owners

  6. Modern image formats in use

    50% observed · all sites 40%

    Serve WebP or AVIF with a JPEG or PNG fallback, either through an image CDN or by generating both formats at build time.

    Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format

Where Security & Monitoring sites lead

  • XML sitemap discoverable84% observedall sites 70%
  • Framing restricted62% observedall sites 51%
  • Page language declared100% observedall sites 90%
  • robots.txt published86% observedall sites 76%

Stack mix

CDN and edge

Platform or framework

DNS operator

Certificate authority

Readiness leaders

Security & Monitoring sites in the top 50K with the highest share of observed practices (at least 26 of 31 checks measured). This lists only what we observed on 23 October 2026; owners can request a correction.

  1. tailscale.com87/100
  2. feedly.com86/100
  3. truecaller.com79/100
  4. osirisai.live77/100
  5. guard.io71/100
  6. spappmonitoring.com65/100
  7. tabangohar.com64/100
  8. mobile-tracker-free.com62/100
  9. mobile-tracker-free.fr58/100
  10. brunoespiao.com.br57/100

All 31 checks for Security & Monitoring

CheckLaneObservedAll sitesMeasured
HTTP requests move to HTTPSHarden88%91%41
HSTS kept for at least a yearHarden42%34%45
TLS 1.3 negotiatedHarden91%91%44
Certificate has more than 14 days leftHarden95%99%44
Certificate lifetime of 100 days or lessHarden73%67%44
CAA records limit who can issue certificatesHarden18%13%45
DNSSEC signedHarden2.2%8%45
security.txt publishedHarden12%7.1%43
DMARC policy enforces quarantine or rejectHarden40%39%45
X-Content-Type-Options: nosniffHarden49%48%45
Framing restrictedHarden62%51%45
Content Security Policy presentHarden33%32%45
Referrer-Policy setHarden24%24%45
HTTP/2 negotiatedAccelerate91%90%44
HTTP/3 advertisedAccelerate40%37%45
HTML compressedAccelerate93%93%44
Static files cached for 30 days or moreAccelerate47%51%38
Modern image formats in useAccelerate50%40%40
Offscreen images lazy-loadedAccelerate52%62%33
No render-blocking scripts in <head>Accelerate47%48%45
robots.txt publishedEnable86%76%44
XML sitemap discoverableEnable84%70%45
Reachable over IPv6Enable44%48%45
Canonical URL declaredEnable64%68%45
Meta description writtenEnable93%84%45
Mobile viewport configuredEnable98%94%45
Structured data presentEnable51%51%45
Social preview image setEnable58%57%45
Page language declaredEnable100%90%45
At most one redirect to the homepageEnable100%98%45
Nameservers spread across providersRecover8.9%10%45

Security & Monitoring profiles

Readiness index shown next to each site.