Skip to content
https://yahoo.net

Security

· 12 checks — HTTP headers, CSP, TLS handshake, and cookie hygiene rolled into one auditable list.
SCORE
75
GRADE
C
FIX
3
REVIEW
3
PASS
6
INFO
0
Checks
12
6 PASS 3 REVIEW 3 FIX
F
Subresource Integrity
Action
0 of 3 external resources have SRI
FIX
0 of 3 external resources have SRI
Warning::
External link from s.yimg.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://s.yimg.com/oa/build/css/site-ltr-281e5c2a.css
Warning::
External script from s.yimg.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://s.yimg.com/oa/build/js/site-b61979ba.js
Warning::
External script from s.yimg.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://s.yimg.com/ss/rapid-3.53.30.js
SRI Coverage 0 / 3 of external resources have integrity hashes
TagDomainIntegrity
<link>s.yimg.com Missing
<script>s.yimg.com Missing
<script>s.yimg.com Missing
D
Permissions-Policy
Action
No header set
FIX
No header set
Warning::
No Permissions-Policy header
Consider adding a Permissions-Policy header to restrict browser feature access from embedded content.

No Permissions-Policy header set.

Without this header, embedded iframes can request access to sensitive device features.

Suggested header
Permissions-Policy: camera=(), microphone=(), geolocation=(), payment=(), usb=()
D
security.txt
Action
No /.well-known/security.txt published
FIX

security.txt

No security.txt found at /.well-known/security.txt

B
Security Headers
6 of 10 headers properly configured
REVIEW
6 of 10 headers properly configured
Warning::
HSTS is missing includeSubDomains
Without includeSubDomains, subdomains can still be accessed over HTTP.
Got: max-age=31536000 Expected: max-age=31536000; includeSubDomains
Info::
X-Content-Type-Options is properly configured
Got: nosniff
Info::
X-Frame-Options is properly configured
Got: DENY
Info::
Referrer-Policy is properly configured
Got: strict-origin-when-cross-origin
Warning::
Permissions-Policy header is missing
Controls which browser features (camera, microphone, geolocation) are allowed. Set it to restrict unused features.
Expected: geolocation=(), camera=(), microphone=()
Info::
Content-Security-Policy is present
Got: sandbox allow-scripts; default-src 'self'; img-src https:; style-src 'unsafe-inl…
Warning::
Cross-Origin-Opener-Policy header is missing
COOP isolates your browsing context, preventing cross-origin side-channel attacks. Set to 'same-origin'.
Expected: same-origin
Warning::
Cross-Origin-Embedder-Policy header is missing
COEP prevents loading cross-origin resources without explicit permission. Required for SharedArrayBuffer and high-resolution timers.
Expected: require-corp
Info::
X-Powered-By header is not present
Info::
Server header is present without version info
Got: ATS

Without includeSubDomains, subdomains can still be accessed over HTTP.

Expected: max-age=31536000; includeSubDomains
Why this matters

Without includeSubDomains, a forgotten dev subdomain over HTTP can set malicious cookies that ride to the apex.

Learn more

HSTS without includeSubDomains protects only the exact domain. Cookies set on a non-HSTS subdomain can ride to the apex via cookie-scope attacks. The fix is one directive append. Verify all subdomains support HTTPS first — adding includeSubDomains to a domain with HTTP-only subdomains breaks them.

Source: RFC 6797

Controls which browser features (camera, microphone, geolocation) are allowed. Set it to restrict unused features.

Expected: geolocation=(), camera=(), microphone=()
Why this matters

Permissions-Policy locks down browser APIs you don't use — without it, every page can request camera/mic/geolocation if XSS lands.

Learn more

By default every page can request the camera, microphone, geolocation, payment APIs, and dozens more. Permissions-Policy turns off the ones you don't need so a future bug can't quietly start using them. It's a defense-in-depth header — one line, big surface reduction.

Source: MDN / W3C

COOP isolates your browsing context, preventing cross-origin side-channel attacks. Set to 'same-origin'.

Expected: same-origin
Why this matters

COOP isolates your top-level browsing context from cross-origin windows — without it, popup-based side-channel attacks remain possible.

Learn more

Cross-Origin-Opener-Policy: same-origin prevents cross-origin pages from sharing a browsing-context group with yours. This blocks cross-window references that enable Spectre-style timing attacks and tab-nabbing. Required if you want to enable SharedArrayBuffer.

Source: MDN / web.dev

COEP prevents loading cross-origin resources without explicit permission. Required for SharedArrayBuffer and high-resolution timers.

Expected: require-corp
Why this matters

COEP enforces that all embedded resources opt-in to cross-origin embedding — required for cross-origin isolation features.

Learn more

Cross-Origin-Embedder-Policy: require-corp ensures every embedded resource (script, iframe, image) explicitly allows being loaded cross-origin. Combined with COOP, this enables the cross-origin-isolated context that unlocks SharedArrayBuffer, high-resolution timers, and other powerful APIs.

Source: MDN / web.dev

C
Content Security Policy
Action
4 of 10 CSP checks passed
REVIEW
4 of 10 CSP checks passed
Info::
Raw CSP policy
Got: sandbox allow-scripts; default-src 'self'; img-src https:; style-src 'unsafe-inline'; script-src 'unsafe-inline'; report-uri https://csp.yahoo.com/beacon/csp?src=redirect
Info::
default-src directive is set
Got: default-src 'self'
Critical::
'unsafe-inline' found in script source
'unsafe-inline' allows inline <script> tags, defeating CSP against XSS. Remove it and use nonces or hashes instead.
Got: script-src 'unsafe-inline'
Info::
No 'unsafe-eval' in script source
Info::
No wildcard in script source
Info::
object-src falls back to default-src
Warning::
base-uri directive is missing
Without base-uri, attackers can inject a <base> tag to hijack relative URLs. Set it to 'self' or 'none'.
Expected: base-uri 'self'
Warning::
frame-ancestors directive is missing
frame-ancestors controls who can embed your page, preventing clickjacking. Set it to 'self' or 'none'.
Expected: frame-ancestors 'self'
Warning::
form-action directive is missing
form-action restricts where forms can submit data, preventing form hijacking.
Expected: form-action 'self'
Info::
upgrade-insecure-requests is not set
This directive upgrades HTTP resources to HTTPS automatically, preventing mixed content.
Expected: upgrade-insecure-requests

'unsafe-inline' allows inline <script> tags, defeating CSP against XSS. Remove it and use nonces or hashes instead.

Why this matters

Unsafe value (unsafe-inline, unsafe-eval) in script-src defeats CSP's main protection — XSS injections can execute again.

Learn more

unsafe-inline allows inline <script> tags; unsafe-eval allows eval() and similar. Both are necessary for some legacy code but explicitly dangerous. Migrate to nonces (per-page random tokens) or hashes (per-script SHA-256) instead.

Source: OWASP CSP / MDN

Without base-uri, attackers can inject a <base> tag to hijack relative URLs. Set it to 'self' or 'none'.

Expected: base-uri 'self'
Why this matters

Missing base-uri in CSP leaves a base-tag injection attack path open even on otherwise strict policies.

Learn more

A common omission: developers add CSP for script-src and frame-ancestors but forget base-uri. The result is a CSP that looks strict but lets an attacker rewrite every URL on the page via <base href>. Add `base-uri 'self'` to close the gap.

Source: MDN CSP

frame-ancestors controls who can embed your page, preventing clickjacking. Set it to 'self' or 'none'.

Expected: frame-ancestors 'self'
Why this matters

Security gaps expose your site and users to attacks, eroding trust.

form-action restricts where forms can submit data, preventing form hijacking.

Expected: form-action 'self'
Why this matters

Security gaps expose your site and users to attacks, eroding trust.

This directive upgrades HTTP resources to HTTPS automatically, preventing mixed content.

Expected: upgrade-insecure-requests
Why this matters

Without upgrade-insecure-requests, any HTTP subresource link survives as a mixed-content warning instead of auto-upgrading.

Learn more

Adding `upgrade-insecure-requests` to your CSP turns every http:// subresource fetch into https:// at the browser layer. One-line defense against accidental mixed content from legacy links or third-party widgets.

Source: MDN CSP

Parsed Policy

sandbox allow-scripts
default-src 'self'
img-src https:
style-src 'unsafe-inline'
script-src 'unsafe-inline'
report-uri https://csp.yahoo.com/beacon/csp?src=redirect
B
CORS Configuration
No CORS headers
REVIEW
No CORS headers
Info::
No CORS headers present — secure default
CORS Configuration Secure

No CORS headers detected.

Cross-origin requests are blocked by browser same-origin policy.

Origin reflection test

Some servers mirror the request Origin header, which can be exploited. Test manually:

curl -sI -H "Origin: https://evil.com" <url> | grep -i access-control
A+
TLS & Certificates
TLS 1.3, 7 checks passed
PASS
TLS 1.3, 7 checks passed
Info::
TLS 1.3 is used
Got: TLS 1.3
Info::
Strong cipher suite is used
Got: TLS_AES_128_GCM_SHA256
Info::
HTTP/2 is not negotiated
HTTP/2 provides multiplexing and header compression for better performance.
Got: http/1.1
Info::
Certificate is valid (expires in 140 days)
Got: 2026-09-09T23:59:59Z
Info::
Certificate chain has 2 certificates
Info::
Certificate uses modern signature algorithm
Got: SHA256-RSA
Info::
Certificate covers 88 domain(s)
Got: src4.yahoo.com, 24-7.pet, 247.vacations, 5min.com, about.yahoo.com, adtechus.com, advertising.maktoob.com, au.astrology.yahoo.com, au.entertainment.yahoo.com, au.food.yahoo.com, au.gwn7.yahoo.com, au.health.yahoo.com, au.horoscopes.yahoo.com, au.lifestyle.yahoo.com, au.movies.yahoo.com, au.pets.yahoo.com, au.recipes.yahoo.com, au.style.yahoo.com, au.travel.yahoo.com, au.tv.yahoo.com, au.video.yahoo.com, br.seguranca.yahoo.com, brooklyn.ops.yahoo.com, careers.yahoo.com, cricket.yahoo.net, education.yahoo.net, es-us.seguridad.yahoo.com, es.seguro.yahoo.com, finance.yahoo, flurry.com, monetization.flurry.com, glp.searchjam.com, gsd.ouroath.com, hk.charity.yahoo.com, hk.forum.search.yahoo.com, jira.corp.yahoo.com, jp.search.yahoo.com, labs.yahoo.com, me.advertising.yahoo.com, oathadplatform.com, oathadplatforms.com, ontheroad.yahoo.com, partners.yahoo.com, postmaster.yahoo.com, style.yahoo.com, transparency.yahoo.com, tw.autos.search.yahoo.com, tw.blog.search.yahoo.com, tw.messenger.yahoo.com, tw.news.yahoo.net, vn.antoan.yahoo.com, weather.gwn7.yahoo.com.au, weather.prime7.yahoo.com.au, www.in.yahoo.com, www.it.yahoo.com, www.legal.yahoo.com, www.maktoob.yahoo.com, www.malaysia.yahoo.com, www.ph.yahoo.com, www.qc.yahoo.com, www.ro.yahoo.com, www.se.yahoo.com, www.sg.yahoo.com, www.tw.yahoo.com, www.uk.yahoo.com, www.vn.yahoo.com, www.yahoo-inc.com, www.yahoo.net, yahoo-inc.com, yahoo.finance, yahoo.net, yahoofinance.com, yahoofinanceinvest.com, yahoohealth.com, yahooinc.com, yahoostyle.com, mail.yahoo, yo.corp.yahoo.com, yahoocreators.com, yahoocreator.com, www.yahoocreator.com, onramp.dh.yahoo.com, evaluate.data.yahoo.com, yahoosports.tv, www.yahoosports.tv, www.platinumpetpremonitions.com, tv.widgets.yahoo.com, *.intheknow.com
Info::
Certificate is issued by a trusted CA
Got: CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1,O=DigiCert Inc,C=US

HTTP/2 provides multiplexing and header compression for better performance.

Why this matters

HTTP/1.1 forces the browser to make sequential requests, multiplying latency on every page.

Learn more

HTTP/2 (and HTTP/3) multiplex many requests over a single connection, eliminating head-of-line blocking. HTTP/1.1 forces the browser to either queue requests or open many parallel connections — both worse. Most modern web servers support HTTP/2 with one config line.

Source: MDN Web Docs

Connection
Protocol
TLS 1.3
Cipher Suite
TLS_AES_128_GCM_SHA256
HTTP Version
HTTP/1.1

Certificate Chain

Leaf Certificate
Subject CN=src4.yahoo.com,O=Yahoo Holdings Inc.,L=New York,ST=New York,C=USIssuer CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1,O=DigiCert Inc,C=USValid 2026-03-17T00:00:00Z → 2026-09-09T23:59:59ZExpires in 140 days SANs src4.yahoo.com, 24-7.pet, 247.vacations, 5min.com, about.yahoo.com, adtechus.com, advertising.maktoob.com, au.astrology.yahoo.com, au.entertainment.yahoo.com, au.food.yahoo.com, au.gwn7.yahoo.com, au.health.yahoo.com, au.horoscopes.yahoo.com, au.lifestyle.yahoo.com, au.movies.yahoo.com, au.pets.yahoo.com, au.recipes.yahoo.com, au.style.yahoo.com, au.travel.yahoo.com, au.tv.yahoo.com, au.video.yahoo.com, br.seguranca.yahoo.com, brooklyn.ops.yahoo.com, careers.yahoo.com, cricket.yahoo.net, education.yahoo.net, es-us.seguridad.yahoo.com, es.seguro.yahoo.com, finance.yahoo, flurry.com, monetization.flurry.com, glp.searchjam.com, gsd.ouroath.com, hk.charity.yahoo.com, hk.forum.search.yahoo.com, jira.corp.yahoo.com, jp.search.yahoo.com, labs.yahoo.com, me.advertising.yahoo.com, oathadplatform.com, oathadplatforms.com, ontheroad.yahoo.com, partners.yahoo.com, postmaster.yahoo.com, style.yahoo.com, transparency.yahoo.com, tw.autos.search.yahoo.com, tw.blog.search.yahoo.com, tw.messenger.yahoo.com, tw.news.yahoo.net, vn.antoan.yahoo.com, weather.gwn7.yahoo.com.au, weather.prime7.yahoo.com.au, www.in.yahoo.com, www.it.yahoo.com, www.legal.yahoo.com, www.maktoob.yahoo.com, www.malaysia.yahoo.com, www.ph.yahoo.com, www.qc.yahoo.com, www.ro.yahoo.com, www.se.yahoo.com, www.sg.yahoo.com, www.tw.yahoo.com, www.uk.yahoo.com, www.vn.yahoo.com, www.yahoo-inc.com, www.yahoo.net, yahoo-inc.com, yahoo.finance, yahoo.net, yahoofinance.com, yahoofinanceinvest.com, yahoohealth.com, yahooinc.com, yahoostyle.com, mail.yahoo, yo.corp.yahoo.com, yahoocreators.com, yahoocreator.com, www.yahoocreator.com, onramp.dh.yahoo.com, evaluate.data.yahoo.com, yahoosports.tv, www.yahoosports.tv, www.platinumpetpremonitions.com, tv.widgets.yahoo.com, *.intheknow.comSignature SHA256-RSASerial 52ca9abcc7913e256d69593080d0467
Intermediate (CA Certificate)
Subject CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1,O=DigiCert Inc,C=USIssuer CN=DigiCert Global Root G2,OU=www.digicert.com,O=DigiCert Inc,C=USValid 2020-09-24T00:00:00Z → 2030-09-23T23:59:59ZExpires in 1615 days Signature SHA256-RSASerial 85f94c02d857be8cc14ff53eda23e2a
A+
Cookie Security
No cookies set — no cookie security risks
PASS
No cookies set — no cookie security risks
Info::
No cookies set — no cookie security risks

No cookies detected — no cookie security risks to report.

A+
JS Library Vulnerabilities
No known vulnerabilities
PASS
No known vulnerabilities
Info::
No known JavaScript library vulnerabilities detected

No known JavaScript library vulnerabilities detected.

A+
Information Leakage
No exposures
PASS
No exposures
Info::
security.txt is present — good practice
Info::
No sensitive files exposed

No sensitive files exposed — all paths returned 404.

PathStatusCategoryRisk
/.git/HEAD Not foundVersion Control
/.git/config Not foundVersion Control
/.svn/entries Not foundVersion Control
/.env Not foundConfiguration
/.env.local Not foundConfiguration
/.env.production Not foundConfiguration
/wp-config.php Not foundConfiguration
/.htaccess Not foundConfiguration
/phpinfo.php Not foundDebug
/server-status Not foundDebug
/server-info Not foundDebug
/.well-known/security.txt ExposedSecurity PolicyInfo
A+
Email Security
DMARC: reject
PASS
DMARC: reject
Info::
DMARC policy is reject — strongest protection
DMARC
Policy reject — strongest protection Record v=DMARC1; p=reject; pct=100; rua=mailto:d@rua.agari.com; ruf=mailto:d@ruf.agari.com;
A
Transport Security
HTTP/3, HSTS, and TLS version analysis
PASS
HTTP/3, HSTS, and TLS version analysis
Info::
HTTP/3 (QUIC) not advertised
HTTP/3 eliminates head-of-line blocking. If your CDN supports it, consider enabling it.
Info::
HSTS enabled (base policy)
Info::
HSTS missing includeSubDomains
Without includeSubDomains, HSTS only protects the exact domain.
Info::
TLS 1.3 in use (fastest handshake, 1-RTT)
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback