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Digital exposure report

expedia.com

Good shape, with a few gaps worth closing this quarter.

Scanned: 2026-11-15 19:22 UTC

Full coverage: every applicable check was assessed.

B
80/100

What to do first

  1. 1.

    Turn on DNS signing for your domain

    Signing helps resolvers detect forged answers about your domain.

    Who can fix it: Your domain registrar or DNS provider

    How to verify after the fix

    dig +short DS expedia.com
  2. 2.

    Choose which companies may issue certificates for your domain

    This reduces the chance of a certificate being issued by a provider you did not choose.

    Who can fix it: Your domain registrar or DNS provider

    How to verify after the fix

    dig +short CAA expedia.com

A starting point, not a security guarantee.

What this grade means

Tested hostname
expedia.com
Website request
GET https://expedia.com/ → https://www.expedia.com/
Scan time
2026-11-15 19:22:36 UTC
Grading method
Version 2How grading works
Unverified or excluded checks
None. Every applicable check was assessed.

This is a snapshot of the public configuration checks listed in this report. It does not verify the site's owner, business legitimacy, application security, or absence of vulnerabilities. It is not a security certification.

Score by category

Email security30/30Spoofing email from this domain is hard.
Encryption & certificate25/25Traffic to the site is encrypted and the certificate is valid.
Browser protections22/30Some browser protections are missing.
DNS infrastructure3/15The domain's infrastructure lacks basic protections.

Fix priorities

  1. 1.MediumDNSSEC — signed DNS records · Hardening gap+7
  2. 2.LowCAA — who may issue certificates · Hardening gap+5
  3. 3.LowReferrer-Policy · Hardening gap+3
  4. 4.LowPermissions-Policy · Hardening gap+2
  5. 5.LowCSP — protection from script injection · Hardening gap+3

Findings

SPF — who may send mail for the domain

Passed · Severity: OK · 10/10

An authorized sender list is defined and mail from other servers is rejected.

Valid SPF record with -all. 7 of the 10 allowed DNS lookups.

Source data: DNS TXT expedia.com
v=spf1 include:_spf.expedia.com a:b.spf.service-now.com include:_spf.qemailserver.com include:spf.clearslide.com include:mail.zendesk.com include:_spf.salesforce.com include:_spf.sidetrade.net ip4:212.99.44.68 ip4:212.99.44.69 ip4:83.138.167.180 ip4:195.50.76.198 ip4:83.138.167.180/30 ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.8.0/21 ip4:199.15.213.62 ip4:199.15.213.63 ip4:192.28.150.108 ip4:66.244.67.50 -all
$ dig +short TXT expedia.com
Documentation: RFC 7208 — SPF (https://www.rfc-editor.org/rfc/rfc7208) · M3AAWG — Email Authentication Best Practices (https://www.m3aawg.org/sites/default/files/m3aawg-email-authentication-recommended-best-practices-09-2020.pdf)

DMARC — anti-spoofing policy

Passed · Severity: OK · 15/15

Forged email in the company's name is blocked by mail servers.

Policy p=reject.

Source data: DNS TXT _dmarc.expedia.com
v=DMARC1; p=reject; fo=1; rua=mailto:expedia@rua.netcraft.com,mailto:dmarc_agg@dmarc.250ok.net ; ruf=mailto:expedia@ruf.netcraft.com,mailto:dmarc_fr@dmarc.250ok.net
$ dig +short TXT _dmarc.expedia.com
Documentation: RFC 7489 — DMARC (https://www.rfc-editor.org/rfc/rfc7489) · dmarc.org — FAQ (https://dmarc.org/resources/frequently-asked-questions/)

DKIM — digital signature on email

Passed · Severity: OK · 5/5

A DKIM public key is published. On its own this doesn't prove outgoing mail is signed or aligned with your From domain.

DKIM public key found for selector: selector1, k1, s1, s2. Confirm signing with dkim=pass in a sent message's Authentication-Results.

Source data: DNS TXT <selector>._domainkey.expedia.com
selector1._domainkey: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDY8KkWqE0IQ0i2NcBBxyqHROJwSxJnzyG7…
k1._domainkey: k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDbNrX2cY/GUKIFx2G/1I00ftdAj713WP9AQ1xir85i8…
s1._domainkey: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxzzeIKjVYAzeyiJw6ww7mX5yFfMRmqbV…
s2._domainkey: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQClZvsuKA0RQh5Ao5BTfZjv1O2TX/wOio9qDW40…
$ dig +short TXT selector1._domainkey.expedia.com
Documentation: RFC 6376 — DKIM (https://www.rfc-editor.org/rfc/rfc6376) · M3AAWG — Email Authentication Best Practices (https://www.m3aawg.org/sites/default/files/m3aawg-email-authentication-recommended-best-practices-09-2020.pdf)

MX — inbound mail routing

Passed · Severity: OK · unscored

Mail exchangers are published for the domain.

2 MX record(s). This shows where inbound mail is routed, not whether mail is sent from the domain.

Source data: DNS MX expedia.com
10 mxa.expediagroup.com
10 mxb.expediagroup.com
$ dig +short MX expedia.com
Documentation: RFC 7505 — Null MX (https://www.rfc-editor.org/rfc/rfc7505) · RFC 5321 §5.1 — Locating the target host (https://www.rfc-editor.org/rfc/rfc5321#section-5.1)

HTTPS available

Passed · Severity: OK · 10/10

The site loads over an encrypted connection.

https://expedia.com/ returned HTTP 429 (final URL: https://www.expedia.com/). Client-side certificate validation passed.

Source data: HTTPS GET https://expedia.com/
HTTP 429
Final URL: https://www.expedia.com/
$ curl -sIL https://expedia.com/
Documentation: OWASP — Transport Layer Security Cheat Sheet (https://cheatsheetseries.owasp.org/cheatsheets/Transport_Layer_Security_Cheat_Sheet.html) · Mozilla — Server Side TLS (https://wiki.mozilla.org/Security/Server_Side_TLS)

HTTP → HTTPS redirect

Passed · Severity: OK · 7/7

Visitors arriving at an unencrypted address are automatically sent to the secure version.

HTTP 301 → https://www.expedia.com/

Source data: HTTP GET http://expedia.com/ (redirects not followed)
HTTP 301
Location: https://www.expedia.com/
$ curl -sI http://expedia.com/ | grep -iE "^(HTTP|location)"
Documentation: OWASP — Transport Layer Security Cheat Sheet (https://cheatsheetseries.owasp.org/cheatsheets/Transport_Layer_Security_Cheat_Sheet.html) · RFC 6797 — HSTS (https://www.rfc-editor.org/rfc/rfc6797)

SSL/TLS certificate validity

Passed · Severity: OK · 8/8

The certificate was accepted by a validating TLS client at scan time.

Live TLS handshake succeeded. Latest issuance in CT logs: Amazon Trust Services, expiring 2027-05-01 (167 days). CT shows issued certificates, not necessarily the one served — confirm dates with the verify command.

Source data: Certificate Transparency logs (certspotter) for expedia.com
Live TLS handshake: certificate accepted
CT logs (context only, not scored):
Issuer: Amazon Trust Services
Valid from: 2026-10-16
Valid until: 2027-05-01
Names: *.expedia.com, *.expedia.com.ar, *.expedia.com.au, *.expedia.com.br, *.expedia.com.hk, expedia.com
Based on Certificate Transparency logs; may not reflect the certificate currently served.
$ echo | openssl s_client -connect expedia.com:443 -servername expedia.com 2>/dev/null | openssl x509 -noout -issuer -dates
Documentation: Certificate Transparency (https://certificate.transparency.dev/) · Let's Encrypt — Docs (https://letsencrypt.org/docs/) · Mozilla — Server Side TLS (https://wiki.mozilla.org/Security/Server_Side_TLS)

HSTS — enforce encryption in the browser

Passed · Severity: OK · 8/8

Browsers are told to always use an encrypted connection to the site.

max-age=63072000 (730 days), includeSubDomains. ≥ 180 days recommended.

Source data: Response headers from https://www.expedia.com/
Strict-Transport-Security: max-age=63072000; includeSubDomains;
$ curl -sIL https://expedia.com/ | grep -i "Strict-Transport-Security"
Documentation: MDN — Strict-Transport-Security (https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Strict-Transport-Security) · RFC 6797 — HSTS (https://www.rfc-editor.org/rfc/rfc6797) · OWASP — HTTP Headers Cheat Sheet (https://cheatsheetseries.owasp.org/cheatsheets/HTTP_Headers_Cheat_Sheet.html)

CSP — protection from script injection

Needs attention · Severity: Low · Hardening gap · 5/8

A script policy exists, but it's permissive and offers only partial protection.

script-src includes: no script-src/default-src — weakens XSS protection.

Source data: Response headers from https://www.expedia.com/
Content-Security-Policy: frame-ancestors 'self'
$ curl -sIL https://expedia.com/ | grep -i "Content-Security-Policy"
Fix recommendation (effort: Complex)
  1. First publish Content-Security-Policy-Report-Only — it blocks nothing, it only reports.
  2. Collect violations for a week or two and tune the policy to your legitimate sources.
  3. Switch to the Content-Security-Policy header and replace 'unsafe-inline' with a nonce or hash.
/*
  Content-Security-Policy-Report-Only: default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'self'

Safety: This change is made in your server/CDN settings. Test on staging before production. An overly strict CSP will break scripts — that's why you start in Report-Only mode.

Documentation: MDN — Content Security Policy (https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/CSP) · OWASP — CSP Cheat Sheet (https://cheatsheetseries.owasp.org/cheatsheets/Content_Security_Policy_Cheat_Sheet.html)

Clickjacking protection

Passed · Severity: OK · 5/5

The site can't be embedded by foreign sites.

X-Frame-Options: SAMEORIGIN frame-ancestors 'self'

Source data: Response headers from https://www.expedia.com/
X-Frame-Options: SAMEORIGIN
CSP frame-ancestors: 'self'
$ curl -sIL https://expedia.com/ | grep -i "X-Frame-Options"
Documentation: MDN — X-Frame-Options (https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Frame-Options) · OWASP — Clickjacking Defense (https://cheatsheetseries.owasp.org/cheatsheets/Clickjacking_Defense_Cheat_Sheet.html)

X-Content-Type-Options

Passed · Severity: OK · 4/4

The browser won't guess file types in a way that could execute code.

nosniff is set.

Source data: Response headers from https://www.expedia.com/
X-Content-Type-Options: nosniff
$ curl -sIL https://expedia.com/ | grep -i "X-Content-Type-Options"
Documentation: MDN — X-Content-Type-Options (https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Content-Type-Options) · OWASP — HTTP Headers Cheat Sheet (https://cheatsheetseries.owasp.org/cheatsheets/HTTP_Headers_Cheat_Sheet.html)

Referrer-Policy

Failed · Severity: Low · Hardening gap · 0/3

Internal URLs (including parameters) may leak to external sites.

Referrer-Policy is missing; the browser will use its default.

Source data: Response headers from https://www.expedia.com/
Referrer-Policy: (missing)
$ curl -sIL https://expedia.com/ | grep -i "Referrer-Policy"
Fix recommendation (effort: Easy)
  1. Set Referrer-Policy: strict-origin-when-cross-origin.
/*
  Referrer-Policy: strict-origin-when-cross-origin

Safety: This change is made in your server/CDN settings. Test on staging before production.

Documentation: MDN — Referrer-Policy (https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Referrer-Policy) · OWASP — HTTP Headers Cheat Sheet (https://cheatsheetseries.owasp.org/cheatsheets/HTTP_Headers_Cheat_Sheet.html)

Permissions-Policy

Needs attention · Severity: Low · Hardening gap · 0/2

Access to sensitive features like the camera and location isn't restricted.

Missing Permissions-Policy header.

Source data: Response headers from https://www.expedia.com/
Permissions-Policy: (missing)
$ curl -sIL https://expedia.com/ | grep -i "Permissions-Policy"
Fix recommendation (effort: Easy)
  1. Disable browser features the site doesn't need (camera, microphone, geolocation).
/*
  Permissions-Policy: camera=(), microphone=(), geolocation=()

Safety: This change is made in your server/CDN settings. Test on staging before production. Don't disable a feature the site actually uses.

Documentation: MDN — Permissions-Policy (https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy) · OWASP — HTTP Headers Cheat Sheet (https://cheatsheetseries.owasp.org/cheatsheets/HTTP_Headers_Cheat_Sheet.html)

Software version disclosure

Passed · Severity: OK · unscored

The server doesn't disclose software versions.

No version numbers found in the Server / X-Powered-By headers.

Source data: Response headers from https://www.expedia.com/
server: cloudflare
x-powered-by: (missing)
$ curl -sIL https://expedia.com/ | grep -iE "^(server|x-powered-by)"
Documentation: OWASP — HTTP Headers Cheat Sheet (https://cheatsheetseries.owasp.org/cheatsheets/HTTP_Headers_Cheat_Sheet.html)

DNSSEC — signed DNS records

Needs attention · Severity: Medium · Hardening gap · 0/7

The domain's records aren't signed, so in some scenarios users could be redirected to a forged server.

No DS record is published at the parent zone, so there's no DNSSEC chain of trust for this zone.

Source data: DNS-over-HTTPS (Cloudflare / Google): AD flag and DS record at the parent
AD = false
DS expedia.com: NODATA
$ dig +short DS expedia.com
Fix recommendation (effort: Medium)
  1. Enable DNSSEC at your DNS provider (one click at most providers).
  2. Copy the DS record your provider generates to your domain registrar.
  3. Wait for propagation and verify with DNSViz.
dig +dnssec expedia.com SOA
delv expedia.com

Safety: DNS changes are made only at your DNS provider. This tool only reads public data and changes nothing on the domain. A wrong DS record at the registrar will make the domain stop resolving — copy it exactly from the provider.

Documentation: RFC 4033 — DNSSEC (https://www.rfc-editor.org/rfc/rfc4033) · ICANN — DNSSEC: what and why (https://www.icann.org/resources/pages/dnssec-what-is-it-why-important-2019-03-05-en)

CAA — who may issue certificates

Needs attention · Severity: Low · Hardening gap · 0/5

Any certificate authority can issue a certificate for the domain, raising the risk of mis-issuance.

No CAA records found. RFC 8659 lets the domain owner restrict which CAs are authorized.

Source data: DNS CAA expedia.com
(no CAA records found)
$ dig +short CAA expedia.com
Fix recommendation (effort: Easy)
  1. Identify which certificate authority issued your current certificate (see the certificate check).
  2. Publish CAA for that authority only, and add iodef to receive alerts.
expedia.com.  CAA  0 issue "letsencrypt.org"
expedia.com.  CAA  0 iodef "mailto:security@expedia.com"

Safety: DNS changes are made only at your DNS provider. This tool only reads public data and changes nothing on the domain. If your CDN issues certificates on your behalf, include it too — otherwise certificate renewal will fail.

Documentation: RFC 8659 — CAA (https://www.rfc-editor.org/rfc/rfc8659)

DNS server redundancy

Passed · Severity: OK · 3/3

The domain is served by several DNS servers, so one server failing won't take it down.

10 NS servers.

Source data: DNS NS expedia.com
dns1.p09.nsone.net
dns2.p09.nsone.net
dns3.p09.nsone.net
dns4.p09.nsone.net
pdns1.ultradns.net
pdns3.ultradns.org
pdns2.ultradns.net
pdns6.ultradns.co.uk
pdns4.ultradns.org
pdns5.ultradns.info
$ dig +short NS expedia.com
Documentation: RFC 2182 — Secondary DNS server operation (https://www.rfc-editor.org/rfc/rfc2182)

Indicative alignment

Best-practice mapping of public findings to common frameworks. Passive scanning tests public configuration only; it doesn't prove compliance or a violation.

  • Google & Yahoo sender rulesNo gaps observed
  • PCI DSS v4.01 observed gaps
  • NIS2 / vendor due diligence2 observed gaps
  • SOC 2 / ISO 27001 baseline1 observed gaps

Indicative alignment only, based on public configuration. It doesn't establish whether a framework applies to you, and it isn't legal advice, an audit or a certification.

Public DNS records

Aexpedia.com2.16.170.133 | 2.16.170.139
AAAAexpedia.com2600:140a:5000:1c::210:aa8b | 2600:140a:5000:1c::210:aa85
MXexpedia.com10 mxa.expediagroup.com | 10 mxb.expediagroup.com
NSexpedia.comdns1.p09.nsone.net | dns2.p09.nsone.net | dns3.p09.nsone.net | dns4.p09.nsone.net | pdns1.ultradns.net | pdns3.ultradns.org | pdns2.ultradns.net | pdns6.ultradns.co.uk | pdns4.ultradns.org | pdns5.ultradns.info
TXTexpedia.comMS=ms41917382 | ZOOM_verify_ofBcMvjmQlCZcaU4dvIkgQ | adobe-idp-site-verification=abcfaaf9-27be-4dca-a1e1-c927aef12f3f | amazonses:6N5k7dR50wcCMNvXtEVCL7tVvOqZBQmuFFEJLokVIfE= | amazonses:Fo+DrXJ2hWyGoODXpSHEzYI4Uw9L93rskKKD/pbX9qk= | amazonses:GpLcOvJxxnz0UuiDzgnZCnWdvkNwNJNDoZsi+jNLl70= | amazonses:JqZ7DCH6v3rdHV51NIWOkU7wPgB0aSTP0Z1hF9tr9N8= | amazonses:L/znkTRG3CC7az8kQioGsNeARe/8ERvOQUwjq69Ov8A= | amazonses:LZ0J6MYU9V4K1tMfUCKKyF2lrqYy7/T1a3SGHMTkgdI= | amazonses:Qz9hS4Kkufxpp+jJXEYur6QH8sCMrNyMuMgqWDY0res= | amazonses:glyQN3VG7+2GwQzW53o2g3FKyzhxfj1s1MoJmxgF/IM= | amazonses:mDgr5HTfTVGx3+y1oKrXWeGLfIIUB6TYS727YPN+MVM= | amazonses:oZ2yR24a2IvFfvd7rTosskhpBLV0+ALRtvkRJIjx0fo= | amazonses:sG5OYkWVHIpG/aa9orqZIna+hfMfRpT1SGaCb4D4XVw= | amazonses:t7uPAmLr+GQsilBGtLdODuKQfxX78F7KKROYzkXeDnk= | anthropic-domain-verification-gvhc3w=7DZit0fI0UvkLidnFGXWSj673 | apple-domain-verification=0Cq9m86umSJj48Lc | apple-domain-verification=dzOcCMjpBEyl50Bc6Wb_j4B10rRmI1Jan_auP5P2lcQ | atlassian-domain-verification=BoDCBNyHJzHh97Myx/Z4n3grU8sMEGR10Mi8CdpStC01PdMAuIARlKP/odGI7CvN | ca3-7a14c6a8346148a8a530cc85edf8eaa2 | cisco-ci-domain-verification=353929ee9fd3a3760facd2437590f676e7cf9395c48c74d21b1df486d09f3374 | docusign=4188e9ec-e035-430e-88b2-7a13724ef5a5 | docusign=af374066-7f8d-4e9e-aa34-ced1f3929a3d | dropbox-domain-verification=4ujrmug64lqg | facebook-domain-verification=imkvqqxv2t6mzz9o2rqoowbjmebkw9 | facebook-domain-verification=s4h6e1h04jupatgxdgiqjclfwmvxu1 | google-site-verification=FpDWRaM4PuuKkac8GS2WnRrOL2ETEawDDPSUqkJHUmc | google-site-verification=nK8ds4mXu1b3H3be6v0EFQoBDNL0ehLYho-eRN0mmik | lucid-verification=kfm1DJP5pmf-wyf1qxd | mailru-verification: 1b3eba1af3b91214 | miro-verification=d36744c01c72c4c0e036eacc18ffe55264b3bf81 | openai-domain-verification=dv-LcuXOUafDEymiB6NOaKRg5yD | perplexity-ai-domain-verification-kx8cwa=8WA6k9CqOacJLnLYJunqAVGGC | slack-domain-verification=81W2yd6WvPIV2bIiJ0v7Z9CctNAA8jqAQl8WaAJq | smartsheet-site-validation=1faPwvohZowpNS7Bl4ROqo9qp0soq7Mo | teamviewer-sso-verification=aed054b0717d4220825c45cb229bfdb2 | tiktok-developers-site-verification=xu7umPD0SGmugD16amWLt5izfF818tcR | v=spf1 include:_spf.expedia.com a:b.spf.service-now.com include:_spf.qemailserver.com include:spf.clearslide.com include:mail.zendesk.com include:_spf.salesforce.com include:_spf.sidetrade.net ip4:212.99.44.68 ip4:212.99.44.69 ip4:83.138.167.180 ip4:195.50.76.198 ip4:83.138.167.180/30 ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.8.0/21 ip4:199.15.213.62 ip4:199.15.213.63 ip4:192.28.150.108 ip4:66.244.67.50 -all | x034XVMC1Z3q1tp7Rd2+WV9Cf8GQ7wqakjbNinoZvSGB2K7/oQbi2hLe8HLezV0ia4zePzaZaIAwzuXiMPSM9A== | 00D00000000hgBG=1TBa70000000GMX | 00D1a000000ZzRr=1TBS60000000DQH | 00D1a000000ZzRr=1TBS600000001ov | cloudflare_dashboard_sso=d8f3b3e3c31a689abf56901f3e140f1e
TXT_dmarc.expedia.comv=DMARC1; p=reject; fo=1; rua=mailto:expedia@rua.netcraft.com,mailto:dmarc_agg@dmarc.250ok.net ; ruf=mailto:expedia@ruf.netcraft.com,mailto:dmarc_fr@dmarc.250ok.net
CAAexpedia.com—
DSexpedia.com—
Passive check only: reading public DNS records, Certificate Transparency logs and ordinary GET requests to the homepage over HTTPS and HTTP. No changes were made to the scanned domain. Results are an indication and do not replace a professional security assessment.

Check your own domain