Security
· 22 checks — HTTP headers, CSP, TLS handshake, and cookie hygiene rolled into one auditable list.FSecurity HeadersAction2 of 10 headers properly configuredFIX
Without includeSubDomains, subdomains can still be accessed over HTTP.
max-age=31536000; includeSubDomainsWithout 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
This header prevents MIME-type sniffing, which can lead to XSS attacks. Set it to 'nosniff'.
nosniffMIME 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.
DENYWithout 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.
strict-origin-when-cross-originDefault 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.
geolocation=(), camera=(), microphone=()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'.
same-originCOOP 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.
require-corpCOEP 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
This header discloses server technology (e.g. Express, PHP), helping attackers target known vulnerabilities. Remove it.
X-Powered-By: PHP/7.4.3 advertises your stack to attackers — disable it.
Learn more ▾ ▴
X-Powered-By and similar headers (X-AspNet-Version, X-Runtime) tell attackers which versions to target. Disable in your server/framework config: PHP `expose_php=Off`, ASP.NET `<httpRuntime enableVersionHeader="false">`, Express `app.disable('x-powered-by')`.
Source: OWASP
Submit your domain to hstspreload.org to close the trust-on-first-use gap. Requires a preload-ready HSTS header (max-age=31536000+, includeSubDomains, preload).
Not in the Chrome preload list — first-time visitors over plain HTTP can be downgraded by a network attacker before HSTS kicks in.
Learn more ▾ ▴
The HSTS header only protects users who have already visited the site (TOFU window). Adding your domain to the Chrome preload list closes that gap so HSTS is enforced from the very first connection. Requires a preload-ready header (max-age=31536000+, includeSubDomains, preload) then submission at hstspreload.org. Inclusion ships in the next Chrome release after acceptance.
Source: hstspreload.org
DCSP Inline-Style ReadinessAction200 inline style attribute(s) detectedFIX
FSubresource IntegrityAction0 of 19 external resources have SRIFIX
| Tag | Domain | Integrity |
|---|---|---|
| <script> | config.aps.amazon-adsystem.com | ✗ Missing |
| <script> | client.aps.amazon-adsystem.com | ✗ Missing |
| <script> | www.google.com | ✗ Missing |
| <script> | cdn.cookielaw.org | ✗ Missing |
| <script> | www.googletagservices.com | ✗ Missing |
| <script> | cdn.concert.io | ✗ Missing |
| <script> | cdn.concert.io | ✗ Missing |
| <script> | pub.doubleverify.com | ✗ Missing |
| <script> | assets.zephr.com | ✗ Missing |
| <script> | cdn.bullwhip.cloud | ✗ Missing |
| <script> | tag.wknd.ai | ✗ Missing |
| <script> | apps.voxmedia.com | ✗ Missing |
| <script> | btloader.com | ✗ Missing |
| <script> | config.aps.amazon-adsystem.com | ✗ Missing |
| <script> | securepubads.g.doubleclick.net | ✗ Missing |
| <script> | secure.cdn.fastclick.net | ✗ Missing |
| <script> | theverge.coral.coralproject.net | ✗ Missing |
| <script> | cdnjs.cloudflare.com | ✗ Missing |
| <script> | ep2.adtrafficquality.google | ✗ Missing |
FEmail SecurityActionno DMARC, no SPFFIX
No DMARC record found
Without DMARC, email receivers have no policy for handling authentication failures from your domain.
Without DMARC, email receivers have no policy for handling authentication failures. Add a TXT record at _dmarc.<domain> starting with v=DMARC1.
Without DMARC, anyone can send phishing emails using your domain name.
Learn more ▾ ▴
DMARC tells receiving mail servers what to do with email that fails SPF/DKIM checks for your domain. With a strict 'p=reject' policy, spoofed emails get bounced; without it they reach the inbox. Domains used in phishing campaigns lose deliverability and brand trust fast.
Source: DMARC.org / NIST
Without SPF (Sender Policy Framework), receivers can't tell which servers are authorized to send mail for your domain. Add a TXT record at the apex starting with v=spf1, ending in -all.
Security gaps expose your site and users to attacks, eroding trust.
DKIM signs outbound mail to prove origin. We probed common selectors (default, google, selector1, etc.) without finding a record. If you use a non-standard selector, this is a false negative.
No DKIM signature on outbound mail — receivers can't cryptographically prove the message came from your domain.
Learn more ▾ ▴
DKIM signs outbound mail with a private key whose public half lives in DNS at <selector>._domainkey.<domain>. Without DKIM, DMARC alone can't tell legitimate mail from spoofs, and large mailbox providers (Gmail, Yahoo) increasingly require DKIM for inbox placement. Note: this check probes a curated list of common selectors; non-standard selectors produce a false negative.
Source: RFC 6376 / Google + Yahoo 2024 sender requirements
MTA-STS forces inbound mail to use TLS, preventing downgrade attacks. Requires both a TXT record at _mta-sts.<domain> and a policy file at https://mta-sts.<domain>/.well-known/mta-sts.txt.
Without MTA-STS, inbound mail can be silently downgraded to plain SMTP by a network attacker.
Learn more ▾ ▴
MTA-STS (RFC 8461) tells sending mail servers to use TLS and to refuse delivery if TLS fails. Requires both a TXT record at _mta-sts.<domain> AND a policy file at https://mta-sts.<domain>/.well-known/mta-sts.txt. Without it, an active attacker on the network path can strip STARTTLS and read the email in plaintext.
Source: RFC 8461
TLS-RPT (RFC 8460) lets MTAs report TLS-handshake failures, so you can detect and fix MTA-STS misconfigurations. Add a TXT record at _smtp._tls.<domain>.
Without TLS-RPT, you have no visibility into inbound TLS failures — MTA-STS misconfigurations stay hidden until users complain.
Learn more ▾ ▴
TLS-RPT (RFC 8460) is the feedback channel for MTA-STS: senders post aggregate reports of TLS-handshake failures to the URI in your _smtp._tls TXT record. Without it, an MTA-STS misconfiguration silently rejects mail and you find out only when someone notices missing email.
Source: RFC 8460
BIMI (Brand Indicators for Message Identification) lets supporting clients (Gmail, Apple Mail, Yahoo) display your verified logo next to your messages. Optional but raises trust signals. Requires DMARC at p=quarantine or p=reject to be honored.
Security gaps expose your site and users to attacks, eroding trust.
DPermissions-PolicyActionNo header setFIX
No Permissions-Policy header set.
Without this header, embedded iframes can request access to sensitive device features.
Permissions-Policy: camera=(), microphone=(), geolocation=(), payment=(), usb=()
BContent Security Policy2 of 10 CSP checks passedREVIEW
default-src provides a fallback for other directives. Set it to restrict default resource loading.
default-src 'self'Security gaps expose your site and users to attacks, eroding trust.
Without base-uri, attackers can inject a <base> tag to hijack relative URLs. Set it to 'self' or 'none'.
base-uri 'self'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
form-action restricts where forms can submit data, preventing form hijacking.
form-action 'self'Security gaps expose your site and users to attacks, eroding trust.
This directive upgrades HTTP resources to HTTPS automatically, preventing mixed content.
upgrade-insecure-requestsWithout 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
BWAF / Bot ProtectionNo WAF detected via response headersREVIEW
Csecurity.txtActionNo security.txt file foundREVIEW
security.txt
No security.txt found at /.well-known/security.txt
CCross-Origin Tab SafetyAction2 of 16 new-tab link(s) missing rel=noopenerREVIEW
BTrusted Types (XSS Sink Hardening)Trusted Types not enabledREVIEW
BAPI Surface1 OpenAPI/Swagger spec exposedREVIEW
BCORS ConfigurationNo CORS headersREVIEW
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 & CertificatesTLS 1.3, 8 checks passedPASS
HTTP/2 provides multiplexing and header compression for better performance.
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
Certificate Chain
A+Source Map ExposureNo source maps accessible (probed 10 candidate URL(s))PASS
A+HTML Version DisclosureNo software-version disclosures in HTMLPASS
A+Open Redirect SurfaceNo redirect-shaped query parameters in DOM linksPASS
A+Subdomain Inventory ExposureNo risky subdomain names in certificate SANsPASS
A+JS Library VulnerabilitiesNo known vulnerabilitiesPASS
No known JavaScript library vulnerabilities detected.
A+Information LeakageNo exposuresPASS
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 | — |
| /package.json | ✓ Not found | dependency-manifest | — |
| /composer.json | ✓ Not found | dependency-manifest | — |
| /Gemfile | ✓ Not found | dependency-manifest | — |
| /Gemfile.lock | ✓ Not found | dependency-manifest | — |
| /requirements.txt | ✓ Not found | dependency-manifest | — |
| /pom.xml | ✓ Not found | dependency-manifest | — |
| /.gitlab-ci.yml | ✓ Not found | ci-config | — |
| /.travis.yml | ✓ Not found | ci-config | — |