Security - https://stelgano.com BeaverCheck Audit

F

Bot Challenge Detection

Action

Scan was blocked by Cloudflare -- the rest of this report does NOT reflect the real site

FIX

Scan was blocked by Cloudflare -- the rest of this report does NOT reflect the real site

Scan returned a Cloudflare bot-protection interstitial, not the actual page

The HTML captured by the scanner is a `Cloudflare` challenge / block page. The scanner's user-agent or IP was flagged as bot traffic and the real site content was never returned. Every other section in this report (security headers, accessibility, content, SEO, performance) was computed against the few KB of interstitial HTML rather than your actual page -- those findings are NOT meaningful for this URL. Detection signal: <title>Just a moment...</title> -- Cloudflare interactive challenge Resolution paths: (1) allow-list BeaverCheck's worker IPs at the bot-protection layer, (2) configure a relaxed challenge for known scanner user-agents, or (3) accept that the public site is unscannable from third-party tools. Note that Cloudflare's "Bot Fight Mode" and "Super Bot Fight Mode" both block the scanner by default.

Got: HTTP 200, title: Just a moment...

F

Subresource Integrity Adoption

Action

0% SRI adoption (0/1 third-party resources)

FIX

0% SRI adoption (0/1 third-party resources)

SRI adoption: 0/1 third-party resources protected (0%)

Of 1 third-party `<script>` / `<link rel=stylesheet>` resources, 0 (0%) declare a Subresource Integrity hash via the `integrity=` attribute. SRI binds the page to the exact bytes of the third-party resource: if the CDN is compromised, attacker-modified bytes won't match the declared hash and the browser refuses to execute the resource. Missing SRI on (first 1 examples): - https://challenges.cloudflare.com/turnstile/v0/g/8fc8ed1d8752/api.js?onload=NoWu9&render=explicit Fix: add `integrity="sha384-..."` and `crossorigin="anonymous"` attributes. Generators: srihash.org, or in-browser via `await crypto.subtle.digest('SHA-384', bytes)`. Cache-bust the resource URL when you change versions, since the integrity hash will mismatch with old cached bytes.

Got: 0% (0/1)

F

Subresource Integrity

Action

0 of 1 external resources have SRI

FIX

0 of 1 external resources have SRI

External script from challenges.cloudflare.com lacks integrity attribute

Without SRI, if this CDN is compromised, attackers could inject malicious code.

Got: https://challenges.cloudflare.com/turnstile/v0/g/8fc8ed1d8752/api.js?onload=NoWu9&render=explicit

SRI Coverage 0 / 1 of external resources have integrity hashes

Tag	Domain	Integrity
<script>	challenges.cloudflare.com	✗ Missing

F

Email Security

Action

no DMARC, SPF: ~all

FIX

no DMARC, SPF: ~all

No DMARC record found

Without DMARC, email receivers have no policy for handling authentication failures. Add a TXT record at _dmarc.<domain> starting with v=DMARC1.

SPF ends in ~all (soft fail)

Soft fail tells receivers to accept-but-mark unauthorized mail. Migrate to -all once you've confirmed all legitimate senders are listed (DMARC aggregate reports help verify).

No DKIM detected via common selectors

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.

MTA-STS not configured

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.

TLS-RPT not configured

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>.

BIMI not configured

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.

DMARC

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.

Why this matters

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

Soft fail tells receivers to accept-but-mark unauthorized mail. Migrate to -all once you've confirmed all legitimate senders are listed (DMARC aggregate reports help verify).

Why this matters

Informational: a labeled value pair from the audit.

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.

Why this matters

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.

Why this matters

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>.

Why this matters

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.

Why this matters

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

B

CSP Inline-Style Readiness

4 inline style attribute(s) detected

REVIEW

4 inline style attribute(s) detected

Each `style=""` attribute forces `style-src 'unsafe-inline'` in any Content-Security-Policy, which negates most of CSP's XSS-mitigation value. 4 inline style(s) is low. Affected element types include: div, nav. Move styles to a stylesheet; use CSS custom properties for runtime-dynamic values; or adopt a nonce/hash CSP policy. Most teams take the stylesheet path because it's also a maintainability win.

B

Trusted Types (XSS Sink Hardening)

Trusted Types not enabled

REVIEW

Trusted Types not enabled

Trusted Types (CSP3) is a Chrome 83+ defense that requires DOM-XSS sinks (innerHTML, document.write, eval, ...) to receive a typed-and-sanitized value rather than a raw string. Adding `Content-Security-Policy: require-trusted-types-for 'script'; trusted-types default` neutralizes most DOM-XSS even when a payload reaches a sink. Adoption is currently ~0.1% of pages so this is informational; a roll-out usually starts in report-only mode.

B

CORS Configuration

No CORS headers

REVIEW

No CORS headers

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+

Security Headers

9 of 10 headers properly configured

PASS

9 of 10 headers properly configured

Strict-Transport-Security is properly configured

Got: max-age=63072000; includeSubDomains; preload

X-Content-Type-Options is properly configured

Got: nosniff

X-Frame-Options is properly configured

Got: DENY

Referrer-Policy is properly configured

Got: no-referrer

Permissions-Policy is set

Got: camera=(), microphone=(), geolocation=(), payment=(), usb=(), midi=(), gyroscope=(), accelerometer=(), magnetometer=()

Content-Security-Policy is present

Got: default-src 'self'; script-src 'self' 'sha256-TcKTNdXTdoY7CPkISQBGRdZrB9mW+WPwtB…

Cross-Origin-Opener-Policy is properly configured

Got: same-origin

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

X-Powered-By header is not present

Server header is present without version info

Got: cloudflare

Domain is not in the Chrome HSTS preload list (status: unknown)

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).

Got: unknown

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

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).

Why this matters

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

A+

Content Security Policy

8 of 10 CSP checks passed

PASS

8 of 10 CSP checks passed

Raw CSP policy

Got: default-src 'self'; script-src 'self' 'sha256-TcKTNdXTdoY7CPkISQBGRdZrB9mW+WPwtBzUlVAeDUI=' 'sha256-cdSspjwBpsvWsWkWNjpTJCWvOFqUartDG9ykPCr0lLM=' 'sha256-poYDbn7T+ti/eraXKWF0Iu9Ha4RvmGjId1mFHxeqJ3U=' 'sha256-xJ+O11qzfGNdhPsakz+MANZJPuAEzgSwqFfTO6evqaU='; style-src 'self' 'unsafe-inline'; font-src 'self'; connect-src 'self' wss: ws:; img-src 'self' data:; object-src 'none'; frame-ancestors 'none'; base-uri 'self'; form-action 'self'

default-src directive is set

Got: default-src 'self'

No 'unsafe-inline' in script source

No 'unsafe-eval' in script source

No wildcard in script source

object-src is set to 'none'

Got: object-src 'none'

base-uri is properly restricted

Got: base-uri 'self'

frame-ancestors directive is set

Got: frame-ancestors 'none'

form-action directive is set

Got: form-action 'self'

upgrade-insecure-requests is not set

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

Expected: upgrade-insecure-requests

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

default-src 'self'

script-src 'self''sha256-TcKTNdXTdoY7CPkISQBGRdZrB9mW+WPwtBzUlVAeDUI=''sha256-cdSspjwBpsvWsWkWNjpTJCWvOFqUartDG9ykPCr0lLM=''sha256-poYDbn7T+ti/eraXKWF0Iu9Ha4RvmGjId1mFHxeqJ3U=''sha256-xJ+O11qzfGNdhPsakz+MANZJPuAEzgSwqFfTO6evqaU='

style-src 'self''unsafe-inline'

font-src 'self'

connect-src 'self'wss:ws:

img-src 'self'data:

object-src 'none'

frame-ancestors 'none'

base-uri 'self'

form-action 'self'

A+

TLS & Certificates

TLS 1.3, 8 checks passed

PASS

TLS 1.3, 8 checks passed

TLS 1.3 is used

Got: TLS 1.3

Strong cipher suite is used

Got: TLS_AES_128_GCM_SHA256

HTTP/2 is not negotiated

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

Got: http/1.1

OCSP stapling enabled

Certificate is valid (expires in 49 days)

Got: 2026-07-27T11:57:08Z

Certificate chain has 3 certificates

Certificate uses modern signature algorithm

Got: ECDSA-SHA256

Certificate covers 2 domain(s)

Got: stelgano.com, *.stelgano.com

Certificate is issued by a trusted CA

Got: CN=WE1,O=Google Trust Services,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=stelgano.comIssuer CN=WE1,O=Google Trust Services,C=USValid 2026-04-28T10:57:11Z → 2026-07-27T11:57:08ZExpires in 49 days SANs stelgano.com, *.stelgano.comSignature ECDSA-SHA256Serial 9fe0766d29547c6e0e4442a08c879648

Intermediate (CA Certificate)

Subject CN=WE1,O=Google Trust Services,C=USIssuer CN=GTS Root R4,O=Google Trust Services LLC,C=USValid 2023-12-13T09:00:00Z → 2029-02-20T14:00:00ZExpires in 988 days Signature ECDSA-SHA384Serial 7ff31977972c224a76155d13b6d685e3

Intermediate (CA Certificate)

Subject CN=GTS Root R4,O=Google Trust Services LLC,C=USIssuer CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BEValid 2023-11-15T03:43:21Z → 2028-01-28T00:00:42ZExpires in 598 days Signature SHA256-RSASerial 7fe530bf331343bedd821610493d8a1b

A+

Cookie Security

No cookies set — no cookie security risks

PASS

No cookies set — no cookie security risks

No cookies detected — no cookie security risks to report.

A+

Cookie Hygiene

No cookies set -- cookie-hygiene check is N/A

PASS

No cookies set -- cookie-hygiene check is N/A

No cookies set

A

WAF / Bot Protection

Cloudflare

PASS

Cloudflare

Cloudflare detected

Detected via: cf-ray: a08514f34f498cf9-CDG

Got: Cloudflare

A+

security.txt

Vulnerability disclosure policy

PASS

Vulnerability disclosure policy

security.txt found

Got: https://stelgano.com/.well-known/security.txt

security.txt

Contact: mailto:security@stelgano.com, https://github.com/stelgano/stelgano/security/advisories/new

Expires: 2027-01-01T00:00:00.000Z

Encryption: https://stelgano.com/.well-known/security-pgp.asc

Policy: https://stelgano.com/.well-known/security.txt

A+

Cross-Origin Tab Safety

All 2 new-tab link(s) carry rel=noopener

PASS

All 2 new-tab link(s) carry rel=noopener

A+

Soft-404 Detection

No soft-404 patterns detected in page title or headings

PASS

No soft-404 patterns detected in page title or headings

A+

Empty Page Detection

Page has substantive body text and no placeholder / template-leak signals

PASS

Page has substantive body text and no placeholder / template-leak signals

A+

Geo-Restriction Detection

No geo-restriction signals detected -- scan reached the page from an allowed region

PASS

No geo-restriction signals detected -- scan reached the page from an allowed region

No geo-restriction detected

A+

Maintenance Mode Detection

No maintenance-mode signals detected -- scan reached a normal page

PASS

No maintenance-mode signals detected -- scan reached a normal page

No maintenance-mode signals detected

A+

CORS Depth

No CORS response headers -- the resource is same-origin-only by browser default

PASS

No CORS response headers -- the resource is same-origin-only by browser default

A

Permissions-Policy Granularity

90% high-risk feature coverage (9/10)

PASS

90% high-risk feature coverage (9/10)

Permissions-Policy covers 9/10 high-risk features (90%)

The Permissions-Policy header explicitly declares policies for 9/10 high-risk features. Covered: camera, microphone, geolocation, payment, usb, midi, accelerometer, gyroscope, magnetometer Not declared (default-allow): serial The non-declared features fall back to their spec-default policy (usually `self`), which means an XSS-injected or compromised iframe could request them. For features the page genuinely doesn't use, declare `feature=()` to fully close them.

Got: 90% (9/10)

A+

Referrer-Policy Strictness

Referrer-Policy is `no-referrer` (strictest -- no Referer header sent at all)

PASS

Referrer-Policy is `no-referrer` (strictest -- no Referer header sent at all)

Referrer-Policy: `no-referrer` -- strictest -- no Referer header sent at all

The strictest setting: no `Referer` header is ever sent. Maximum privacy, but breaks referrer-based analytics and any cross-origin auth flow that relies on the Referer header. Use only when the page handles no referrer-dependent flows.

Got: no-referrer

A+

Source Map Exposure

Source-map probe didn't run on this scan

PASS

Source-map probe didn't run on this scan

A+

HTML Version Disclosure

No software-version disclosures in HTML

PASS

No software-version disclosures in HTML

A+

Open Redirect Surface

No redirect-shaped query parameters in DOM links

PASS

No redirect-shaped query parameters in DOM links

A+

Auth Security

Page is not a login form -- auth-security checks are N/A

PASS

Page is not a login form -- auth-security checks are N/A

Page does not appear to be a login form

A+

Subdomain Inventory Exposure

No risky subdomain names in certificate SANs

PASS

No risky subdomain names in certificate SANs

A+

JS Library Vulnerabilities

No known vulnerabilities

PASS

No known vulnerabilities

No known JavaScript library vulnerabilities detected

No known JavaScript library vulnerabilities detected.

A+

Information Leakage

No exposures

PASS

No exposures

security.txt is present — good practice

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	✗ Exposed	Security Policy	Info
/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	—

A+

API Surface

No API specs or GraphQL introspection found (probed 11 candidate path(s))

PASS

No API specs or GraphQL introspection found (probed 11 candidate path(s))

No API specs or GraphQL introspection found (probed 11 path(s))

A+

Permissions-Policy

9 directives, 0 missing

PASS

9 directives, 0 missing

camera=() — blocked for all origins

microphone=() — blocked for all origins

geolocation=() — blocked for all origins

payment=() — blocked for all origins

usb=() — blocked for all origins

midi=() — blocked for all origins

gyroscope=() — blocked for all origins

accelerometer=() — blocked for all origins

magnetometer=() — blocked for all origins

Raw Header

camera=() microphone=() geolocation=() payment=() usb=() midi=() gyroscope=() accelerometer=() magnetometer=()

Feature Permissions

Blocked Self Only Unrestricted Not Set

camera Blocked

microphone Blocked

geolocation Blocked

payment Blocked

usb Blocked

midi Blocked

gyroscope Blocked

accelerometer Blocked

magnetometer Blocked

A+

Transport Security

HTTP/3, HSTS, and TLS version analysis

PASS

HTTP/3, HSTS, and TLS version analysis

HTTP/3 (QUIC) supported

The server advertises HTTP/3 via Alt-Svc for faster connections on mobile networks.

HSTS enabled (includeSubDomains, preload)

HSTS preload enabled

TLS 1.3 in use (fastest handshake, 1-RTT)