https://elpais.com
Security
· 12 checks — HTTP headers, CSP, TLS handshake, and cookie hygiene rolled into one auditable list.SCORE
59
GRADE
D
FIX
6
REVIEW
2
PASS
4
INFO
0
Checks
124 PASS 2 REVIEW 6 FIX
FSecurity HeadersAction2 of 10 headers properly configuredFIX
Security Headers
Action2 of 10 headers properly configured
2 of 10 headers properly configured
Critical::
HSTS header is missing
Strict-Transport-Security forces browsers to use HTTPS, preventing downgrade attacks. Add the header with a max-age of at least 1 year.
Expected: max-age=31536000; includeSubDomains
Warning::
X-Content-Type-Options header is missing
This header prevents MIME-type sniffing, which can lead to XSS attacks. Set it to 'nosniff'.
Expected: nosniff
Warning::
X-Frame-Options header is missing
This header prevents clickjacking by controlling who can embed your page in a frame. Set it to DENY or SAMEORIGIN.
Expected: DENY
Warning::
Referrer-Policy header is missing
Controls how much referrer information is sent with requests. Set to 'strict-origin-when-cross-origin' or stricter.
Expected: 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=()
Critical::
Content-Security-Policy header is missing
CSP is the most important header for preventing XSS attacks. See the CSP section for detailed analysis.
Expected: default-src 'self'
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: openresty
Strict-Transport-Security forces browsers to use HTTPS, preventing downgrade attacks. Add the header with a max-age of at least 1 year.
Expected:
max-age=31536000; includeSubDomainsWhy this matters
Without HSTS, a network attacker can downgrade the very first connection to HTTP and steal the user's session.
Learn more ▾ ▴
HSTS tells browsers 'never speak HTTP to this domain again.' Without it, a network attacker (public WiFi, malicious ISP, hostile DNS) intercepts the first HTTP attempt and serves a downgraded version of your site. One header, big surface reduction.
Source: RFC 6797 / OWASP
CSP is the most important header for preventing XSS attacks. See the CSP section for detailed analysis.
Expected:
default-src 'self'Why this matters
Without a CSP, a single XSS bug can exfiltrate everything your users type — including credentials.
Learn more ▾ ▴
Content-Security-Policy is the browser-enforced firewall against XSS. With a strict CSP, a script injection that would otherwise steal session cookies or rewrite the page is silently blocked. Without it, your only defense is hoping every input on every form is escaped correctly forever.
Source: OWASP / MDN
This header prevents MIME-type sniffing, which can lead to XSS attacks. Set it to 'nosniff'.
Expected:
nosniffWhy this matters
MIME sniffing lets browsers run uploaded files as JavaScript, turning a file upload into an XSS.
Learn more ▾ ▴
Setting X-Content-Type-Options: nosniff tells browsers to trust your declared Content-Type instead of guessing. Without it, an attacker who uploads a polyglot file can sometimes get it executed as a script. One header, no downside.
Source: OWASP / MDN
This header prevents clickjacking by controlling who can embed your page in a frame. Set it to DENY or SAMEORIGIN.
Expected:
DENYWhy this matters
Without frame protection, your site can be embedded in a hostile page and used for clickjacking.
Learn more ▾ ▴
Clickjacking overlays your site under a transparent malicious page so users click invisible buttons. Setting X-Frame-Options: DENY (or a modern frame-ancestors CSP directive) blocks the embedding entirely. There's almost never a legitimate reason to allow it.
Source: OWASP / MDN
Controls how much referrer information is sent with requests. Set to 'strict-origin-when-cross-origin' or stricter.
Expected:
strict-origin-when-cross-originWhy this matters
Default browser behavior leaks full URLs (including query params and tokens) to every third-party resource — set a strict policy.
Learn more ▾ ▴
Without a Referrer-Policy header, browsers send the full referring URL with images, scripts, and fonts loaded from third-party origins. URLs containing tokens, user IDs, or session params end up in third-party logs. Set `Referrer-Policy: strict-origin-when-cross-origin` (or stricter) to limit leakage.
Source: MDN / W3C
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-originWhy 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-corpWhy 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
FContent Security PolicyActionNo enforcing CSP policy foundFIX
Content Security Policy
ActionNo enforcing CSP policy found
No enforcing CSP policy found
Critical::
No Content-Security-Policy header found
CSP is the most effective defense against XSS attacks. Add a Content-Security-Policy header to restrict resource loading.
Expected: default-src 'self'
CSP is the most effective defense against XSS attacks. Add a Content-Security-Policy header to restrict resource loading.
Expected:
default-src 'self'Why this matters
Without a CSP, a single XSS bug can exfiltrate everything users type — credentials, payment data, session tokens.
Learn more ▾ ▴
Content-Security-Policy is the browser-enforced firewall against XSS. With a strict CSP, a script injection that would otherwise steal session cookies is silently blocked. Without it, your only defense is hoping every input on every form is escaped correctly forever. Start in Report-Only mode, fix violations, then graduate to enforcing.
Source: OWASP / MDN
FSubresource IntegrityAction0 of 41 external resources have SRIFIX
Subresource Integrity
Action0 of 41 external resources have SRI
0 of 41 external resources have SRI
Warning::
External script from ats-wrapper.privacymanager.io lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://ats-wrapper.privacymanager.io/ats-modules/a95fc332-885d-40c0-aa11-3c7c55aa0d7d/ats.js
Warning::
External script from ak-ads-ns.prisasd.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://ak-ads-ns.prisasd.com/prebid/10_27_0/prebid.js
Warning::
External script from c.amazon-adsystem.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://c.amazon-adsystem.com/aax2/apstag.js
Warning::
External script from securepubads.g.doubleclick.net lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://securepubads.g.doubleclick.net/tag/js/gpt.js
Warning::
External script from sdk.privacy-center.org lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://sdk.privacy-center.org/8ba38674-edba-484d-8053-435051d79f72/loader.js?target=elpais.com
Warning::
External script from c.amazon-adsystem.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://c.amazon-adsystem.com/aax2/apstag.js
Warning::
External script from sdk.mrf.io lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://sdk.mrf.io/statics/marfeel-sdk.es5.js?id=2223
Warning::
External script from sdk.mrf.io lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://sdk.mrf.io/statics/marfeel-sdk.js?id=2223
Warning::
External script from ES-config.sensic.net lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://ES-config.sensic.net/s2s-web.js
Warning::
External script from accounts.google.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://accounts.google.com/gsi/client
Warning::
External script from static.prisa.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://static.prisa.com/dist/subs/securesharesession/v2/latest/securesharesession.min.js
Warning::
External script from static.elpais.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://static.elpais.com/dist/resources/js/bb68fdafcde215f438478153f2f47c32/ENP-section-front.js
Warning::
External script from contributor.google.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://contributor.google.com/scripts/1d9eb4aae2cdce07/loader.js
Warning::
External script from fundingchoicesmessages.google.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://fundingchoicesmessages.google.com/f/AGSKWxWl4OHVOhONFmrW5xi_scJ2jYwch61PP591wCtLQJVTlKBzlHvrAnxtgHVpItmxcNRmUnc2DlVHjXZ1d7PY
Warning::
External script from fundingchoicesmessages.google.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://fundingchoicesmessages.google.com/f/AGSKWxUA6QvjpuiNWzwqY1JiI4VprpmYxIiBo3ZSVqQo3Pb8rFtXUiA6fzUS86koD8amUfgbAoNx0sByha04QbSUai4LwLrKMUrAtEYZzpnd-tlOb4_E1syeYid9iOrJj_E2AxB8qwU=?fccs=W251bGwsbnVsbCxudWxsLG51bGwsbnVsbCxudWxsLFsxNzc2MjkzNzMxLDEzODAwMDAwMF0sbnVsbCxudWxsLG51bGwsW251bGwsWzddXSwiaHR0cHM6Ly9lbHBhaXMuY29tLyIsbnVsbCxbWzgsIldRU2pLdGtFWWlNIl0sWzksImVuLVVTIl0sWzE2LCJbMSwxLDFdIl0sWzM1LCIxNzc2MjkzNzMxIl0sWzE5LCIyIl0sWzE3LCJbMF0iXSxbMjQsIiJdLFsyOSwiZmFsc2UiXV1d
Warning::
External script from assets.adobedtm.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: //assets.adobedtm.com/0681c221600c/d0943e7fed9e/launch-90f4fb204f3b.min.js
Warning::
External script from player.prisamedia.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://player.prisamedia.com/core/js/coreplayer_launcher.js
Warning::
External script from player.prisamedia.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: //player.prisamedia.com/componentes/reels/reels.lib.js
Warning::
External script from assets.adobedtm.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://assets.adobedtm.com/extensions/EPbf7b42aa08bc4f10879b1484195e80d1/AppMeasurement.min.js
Warning::
External script from assets.adobedtm.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://assets.adobedtm.com/extensions/EPbf7b42aa08bc4f10879b1484195e80d1/AppMeasurement_Module_ActivityMap.min.js
Warning::
External script from assets.adobedtm.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://assets.adobedtm.com/0681c221600c/d0943e7fed9e/eab809f3921c/RC4f707dd6fa144f7895ad985262176386-source.min.js
Warning::
External script from fundingchoicesmessages.google.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://fundingchoicesmessages.google.com/f/AGSKWxVvBxME9yH3cszQXxE4MTor3A4_gbKT25yhYd3hZ_CRPi0mfKR8SX-Eb0vOy5kN8TrNUQAGxAFHtEwpB5gGJ5dYC0NIk9DfbdDDw2Lor1bBK5ckLjPaBhr7-UQ45c8FdArOIoU=?fccs=W251bGwsbnVsbCxudWxsLG51bGwsbnVsbCxudWxsLFsxNzc2MjkzNzMyLDIxOTAwMDAwMF0sbnVsbCxudWxsLG51bGwsW251bGwsWzcsNl0sbnVsbCxudWxsLG51bGwsbnVsbCxudWxsLG51bGwsbnVsbCxudWxsLG51bGwsMV0sImh0dHBzOi8vZWxwYWlzLmNvbS8iLG51bGwsW1s4LCJXUVNqS3RrRVlpTSJdLFs5LCJlbi1VUyJdLFsxNiwiWzEsMSwxXSJdLFszNSwiMTc3NjI5MzczMSJdLFsxOSwiMiJdLFsxNywiWzBdIl0sWzI0LCIiXSxbMjksImZhbHNlIl1dXQ
Warning::
External script from assets.adobedtm.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://assets.adobedtm.com/0681c221600c/d0943e7fed9e/eab809f3921c/RC6d06c68917d84e94b03fdb45321f2626-source.min.js
Warning::
External script from marfeelexperimentsexperienceengine.mrf.io lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://marfeelexperimentsexperienceengine.mrf.io/experimentsexperience/render?siteId=2223&url=https://elpais.com&experimentType=HeadlineAB&lang=es&version=esnext
Warning::
External script from marfeelexperimentsexperienceengine.mrf.io lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://marfeelexperimentsexperienceengine.mrf.io/experimentsexperience/render?siteId=2223&url=https://elpais.com&experimentType=HeadlineAB&lang=es&version=legacy
Warning::
External script from config.aps.amazon-adsystem.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://config.aps.amazon-adsystem.com/configs/3226
Warning::
External script from config.aps.amazon-adsystem.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://config.aps.amazon-adsystem.com/configs/3226
Warning::
External link from player.prisamedia.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: //player.prisamedia.com/core//style/core.css
Warning::
External script from sdk.privacy-center.org lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://sdk.privacy-center.org/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/sdk.d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3.js
Warning::
External script from securepubads.g.doubleclick.net lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604100101/pubads_impl.js
Warning::
External script from player.prisamedia.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: //player.prisamedia.com/core//skins/epaudioportada/epaudioportada.min.js
Warning::
External link from player.prisamedia.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: //player.prisamedia.com/core//skins/epaudioportada/css/player.css
Warning::
External link from player.prisamedia.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: //player.prisamedia.com/core//skins/epaudioportada/css/player-storycard.css
Warning::
External link from static.elpais.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://static.elpais.com/dist/resources/css/bb68fdafcde215f438478153f2f47c32/ENP/el-pais/section-manual.css
Warning::
External script from static.prisa.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://static.prisa.com/dist/subs/pmuser/2.5.0/pmuser.min.js
Warning::
External script from static.prisa.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://static.prisa.com/dist/subs/pmcompass/1.0.0/pmcompass.iife.js
Warning::
External script from static.prisa.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://static.prisa.com/dist/subs/pmwall/1.3.0/pmwall.min.js
Warning::
External script from cmp.prisa.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://cmp.prisa.com/dist/cmp_ep.js
Warning::
External script from ak-ads-ns.prisasd.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://ak-ads-ns.prisasd.com/slot/elpais/slot.js
Warning::
External script from dd.elpais.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://dd.elpais.com/tags.js
Warning::
External script from player.prisamedia.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: //player.prisamedia.com/core//js/coreplayer.min.js
SRI Coverage 0 / 41 of external resources have integrity hashes
| Tag | Domain | Integrity |
|---|---|---|
| <script> | ats-wrapper.privacymanager.io | ✗ Missing |
| <script> | ak-ads-ns.prisasd.com | ✗ Missing |
| <script> | c.amazon-adsystem.com | ✗ Missing |
| <script> | securepubads.g.doubleclick.net | ✗ Missing |
| <script> | sdk.privacy-center.org | ✗ Missing |
| <script> | c.amazon-adsystem.com | ✗ Missing |
| <script> | sdk.mrf.io | ✗ Missing |
| <script> | sdk.mrf.io | ✗ Missing |
| <script> | ES-config.sensic.net | ✗ Missing |
| <script> | accounts.google.com | ✗ Missing |
| <script> | static.prisa.com | ✗ Missing |
| <script> | static.elpais.com | ✗ Missing |
| <script> | contributor.google.com | ✗ Missing |
| <script> | fundingchoicesmessages.google.com | ✗ Missing |
| <script> | fundingchoicesmessages.google.com | ✗ Missing |
| <script> | assets.adobedtm.com | ✗ Missing |
| <script> | player.prisamedia.com | ✗ Missing |
| <script> | player.prisamedia.com | ✗ Missing |
| <script> | assets.adobedtm.com | ✗ Missing |
| <script> | assets.adobedtm.com | ✗ Missing |
| <script> | assets.adobedtm.com | ✗ Missing |
| <script> | fundingchoicesmessages.google.com | ✗ Missing |
| <script> | assets.adobedtm.com | ✗ Missing |
| <script> | marfeelexperimentsexperienceengine.mrf.io | ✗ Missing |
| <script> | marfeelexperimentsexperienceengine.mrf.io | ✗ Missing |
| <script> | config.aps.amazon-adsystem.com | ✗ Missing |
| <script> | config.aps.amazon-adsystem.com | ✗ Missing |
| <link> | player.prisamedia.com | ✗ Missing |
| <script> | sdk.privacy-center.org | ✗ Missing |
| <script> | securepubads.g.doubleclick.net | ✗ Missing |
| <script> | player.prisamedia.com | ✗ Missing |
| <link> | player.prisamedia.com | ✗ Missing |
| <link> | player.prisamedia.com | ✗ Missing |
| <link> | static.elpais.com | ✗ Missing |
| <script> | static.prisa.com | ✗ Missing |
| <script> | static.prisa.com | ✗ Missing |
| <script> | static.prisa.com | ✗ Missing |
| <script> | cmp.prisa.com | ✗ Missing |
| <script> | ak-ads-ns.prisasd.com | ✗ Missing |
| <script> | dd.elpais.com | ✗ Missing |
| <script> | player.prisamedia.com | ✗ Missing |
DPermissions-PolicyActionNo header setFIX
Permissions-Policy
ActionNo header set
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=()
Dsecurity.txtActionNo /.well-known/security.txt publishedFIX
security.txt
ActionNo /.well-known/security.txt published
security.txt
No security.txt found at /.well-known/security.txt
BCORS ConfigurationNo CORS headersREVIEW
CORS Configuration
No CORS headers
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
BTransport SecurityHTTP/3, HSTS, and TLS version analysisREVIEW
Transport Security
HTTP/3, HSTS, and TLS version analysis
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.
Warning::
Missing Strict-Transport-Security header
HSTS tells browsers to only use HTTPS, preventing SSL stripping attacks.
Info::
TLS 1.3 in use (fastest handshake, 1-RTT)
A+TLS & CertificatesTLS 1.3, 7 checks passedPASS
TLS & Certificates
TLS 1.3, 7 checks passed
TLS 1.3, 7 checks passed
Info::
TLS 1.3 is used
Got: TLS 1.3
Info::
Strong cipher suite is used
Got: TLS_CHACHA20_POLY1305_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 89 days)
Got: 2026-07-14T10:14:05Z
Info::
Certificate chain has 2 certificates
Info::
Certificate uses modern signature algorithm
Got: SHA256-RSA
Info::
Certificate covers 67 domain(s)
Got: api-prisa-el-pais-america-prod.cdn.arcpublishing.com, api-prisa-el-pais-america-sandbox.cdn.arcpublishing.com, api-prisa-el-pais-brasil-prod.cdn.arcpublishing.com, api-prisa-el-pais-brasil-sandbox.cdn.arcpublishing.com, api-prisa-el-pais-cataluna-prod.cdn.arcpublishing.com, api-prisa-el-pais-cataluna-sandbox.cdn.arcpublishing.com, api-prisa-el-pais-dev.cdn.arcpublishing.com, api-prisa-el-pais-in-english-prod.cdn.arcpublishing.com, api-prisa-el-pais-in-english-sandbox.cdn.arcpublishing.com, api-prisa-el-pais-prod.cdn.arcpublishing.com, api-prisa-el-pais-sandbox.cdn.arcpublishing.com, arc-sandbox.america.elpais.com, arc-sandbox.brasil.elpais.com, arc-sandbox.cat.elpais.com, arc-sandbox.inenglish.elpais.com, brasil.elpais.com, cat.elpais.com, cincodias.elpais.com, elpais.com, english.elpais.com, imagenes.america.elpais.com, imagenes.elpais.com, imagens.brasil.elpais.com, images.english.elpais.com, images.inenglish.elpais.com, imatges.cat.elpais.com, prisa-config-prod.api.cdn.arcpublishing.com, prisa-config-sandbox.api.cdn.arcpublishing.com, prisa-el-pais-america-prod.cdn.arcpublishing.com, prisa-el-pais-america-prod.web.arc-cdn.net, prisa-el-pais-america-sandbox.cdn.arcpublishing.com, prisa-el-pais-america-sandbox.web.arc-cdn.net, prisa-el-pais-brasil-dev.cdn.arcpublishing.com, prisa-el-pais-brasil-dev.web.arc-cdn.net, prisa-el-pais-brasil-prod.cdn.arcpublishing.com, prisa-el-pais-brasil-prod.web.arc-cdn.net, prisa-el-pais-brasil-sandbox.cdn.arcpublishing.com, prisa-el-pais-brasil-sandbox.web.arc-cdn.net, prisa-el-pais-cataluna-prod.cdn.arcpublishing.com, prisa-el-pais-cataluna-prod.web.arc-cdn.net, prisa-el-pais-cataluna-sandbox.cdn.arcpublishing.com, prisa-el-pais-cataluna-sandbox.web.arc-cdn.net, prisa-el-pais-dev.cdn.arcpublishing.com, prisa-el-pais-dev.web.arc-cdn.net, prisa-el-pais-in-english-dev.cdn.arcpublishing.com, prisa-el-pais-in-english-dev.web.arc-cdn.net, prisa-el-pais-in-english-prod.cdn.arcpublishing.com, prisa-el-pais-in-english-prod.web.arc-cdn.net, prisa-el-pais-in-english-sandbox.cdn.arcpublishing.com, prisa-el-pais-in-english-sandbox.web.arc-cdn.net, prisa-el-pais-prod.cdn.arcpublishing.com, prisa-el-pais-prod.web.arc-cdn.net, prisa-el-pais-sandbox.cdn.arcpublishing.com, prisa-el-pais-sandbox.web.arc-cdn.net, prisa.web.arc-cdn.net, publicapi.america.elpais.com, publicapi.brasil.elpais.com, publicapi.cat.elpais.com, publicapi.elpais.com, publicapi.english.elpais.com, publicapi.sandbox.america.elpais.com, publicapi.sandbox.brasil.elpais.com, publicapi.sandbox.cat.elpais.com, publicapi.sandbox.elpais.com, publicapi.sandbox.english.elpais.com, sandbox.imagenes.elpais.com, staging.elpais.com
Info::
Certificate is issued by a trusted CA
Got: CN=R12,O=Let's Encrypt,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_CHACHA20_POLY1305_SHA256
HTTP Version
HTTP/1.1
Certificate Chain
Leaf Certificate
Subject CN=prisa.web.arc-cdn.netIssuer CN=R12,O=Let's Encrypt,C=USValid 2026-04-15T10:14:06Z → 2026-07-14T10:14:05ZExpires in 89 days SANs api-prisa-el-pais-america-prod.cdn.arcpublishing.com, api-prisa-el-pais-america-sandbox.cdn.arcpublishing.com, api-prisa-el-pais-brasil-prod.cdn.arcpublishing.com, api-prisa-el-pais-brasil-sandbox.cdn.arcpublishing.com, api-prisa-el-pais-cataluna-prod.cdn.arcpublishing.com, api-prisa-el-pais-cataluna-sandbox.cdn.arcpublishing.com, api-prisa-el-pais-dev.cdn.arcpublishing.com, api-prisa-el-pais-in-english-prod.cdn.arcpublishing.com, api-prisa-el-pais-in-english-sandbox.cdn.arcpublishing.com, api-prisa-el-pais-prod.cdn.arcpublishing.com, api-prisa-el-pais-sandbox.cdn.arcpublishing.com, arc-sandbox.america.elpais.com, arc-sandbox.brasil.elpais.com, arc-sandbox.cat.elpais.com, arc-sandbox.inenglish.elpais.com, brasil.elpais.com, cat.elpais.com, cincodias.elpais.com, elpais.com, english.elpais.com, imagenes.america.elpais.com, imagenes.elpais.com, imagens.brasil.elpais.com, images.english.elpais.com, images.inenglish.elpais.com, imatges.cat.elpais.com, prisa-config-prod.api.cdn.arcpublishing.com, prisa-config-sandbox.api.cdn.arcpublishing.com, prisa-el-pais-america-prod.cdn.arcpublishing.com, prisa-el-pais-america-prod.web.arc-cdn.net, prisa-el-pais-america-sandbox.cdn.arcpublishing.com, prisa-el-pais-america-sandbox.web.arc-cdn.net, prisa-el-pais-brasil-dev.cdn.arcpublishing.com, prisa-el-pais-brasil-dev.web.arc-cdn.net, prisa-el-pais-brasil-prod.cdn.arcpublishing.com, prisa-el-pais-brasil-prod.web.arc-cdn.net, prisa-el-pais-brasil-sandbox.cdn.arcpublishing.com, prisa-el-pais-brasil-sandbox.web.arc-cdn.net, prisa-el-pais-cataluna-prod.cdn.arcpublishing.com, prisa-el-pais-cataluna-prod.web.arc-cdn.net, prisa-el-pais-cataluna-sandbox.cdn.arcpublishing.com, prisa-el-pais-cataluna-sandbox.web.arc-cdn.net, prisa-el-pais-dev.cdn.arcpublishing.com, prisa-el-pais-dev.web.arc-cdn.net, prisa-el-pais-in-english-dev.cdn.arcpublishing.com, prisa-el-pais-in-english-dev.web.arc-cdn.net, prisa-el-pais-in-english-prod.cdn.arcpublishing.com, prisa-el-pais-in-english-prod.web.arc-cdn.net, prisa-el-pais-in-english-sandbox.cdn.arcpublishing.com, prisa-el-pais-in-english-sandbox.web.arc-cdn.net, prisa-el-pais-prod.cdn.arcpublishing.com, prisa-el-pais-prod.web.arc-cdn.net, prisa-el-pais-sandbox.cdn.arcpublishing.com, prisa-el-pais-sandbox.web.arc-cdn.net, prisa.web.arc-cdn.net, publicapi.america.elpais.com, publicapi.brasil.elpais.com, publicapi.cat.elpais.com, publicapi.elpais.com, publicapi.english.elpais.com, publicapi.sandbox.america.elpais.com, publicapi.sandbox.brasil.elpais.com, publicapi.sandbox.cat.elpais.com, publicapi.sandbox.elpais.com, publicapi.sandbox.english.elpais.com, sandbox.imagenes.elpais.com, staging.elpais.comSignature SHA256-RSASerial 6b3f19a41706a1cbb1b13cbdadc8e58e89c
Intermediate (CA Certificate)
Subject CN=R12,O=Let's Encrypt,C=USIssuer CN=ISRG Root X1,O=Internet Security Research Group,C=USValid 2024-03-13T00:00:00Z → 2027-03-12T23:59:59ZExpires in 331 days Signature SHA256-RSASerial c212324b70a9b49171dc40f7e285263c
A+JS Library VulnerabilitiesNo known vulnerabilitiesPASS
JS Library Vulnerabilities
No known vulnerabilities
No known vulnerabilities
Info::
No known JavaScript library vulnerabilities detected
No known JavaScript library vulnerabilities detected.
A+Information LeakageNo exposuresPASS
Information Leakage
No exposures
No exposures
Info::
No security.txt found
Consider adding a security.txt at /.well-known/security.txt.
Info::
No sensitive files exposed
No sensitive files exposed — all paths returned 404.
| Path | Status | Category | Risk |
|---|---|---|---|
| /.git/HEAD | ✓ Not found | Version Control | — |
| /.git/config | ✓ Not found | Version Control | — |
| /.svn/entries | ✓ Not found | Version Control | — |
| /.env | ✓ Not found | Configuration | — |
| /.env.local | ✓ Not found | Configuration | — |
| /.env.production | ✓ Not found | Configuration | — |
| /wp-config.php | ✓ Not found | Configuration | — |
| /.htaccess | ✓ Not found | Configuration | — |
| /phpinfo.php | ✓ Not found | Debug | — |
| /server-status | ✓ Not found | Debug | — |
| /server-info | ✓ Not found | Debug | — |
| /.well-known/security.txt | ✓ Not found | Security Policy | — |
A+Email SecurityDMARC: rejectPASS
Email Security
DMARC: reject
DMARC: reject
Info::
DMARC policy is reject — strongest protection
DMARC
Policy reject — strongest protection Record v=DMARC1; p=reject; pct=100; sp=reject; rua=mailto:4a542fa6@inbox.ondmarc.com; ruf=mailto:4a542fa6@inbox.ondmarc.com; adkim=r; aspf=r; fo=1; rf=afrf; ri=43200
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.