Security - https://nu11cyber.com BeaverCheck Audit

D

Source Map Exposure

Action

2 publicly-accessible source map(s) -- full source code leaked

FIX

2 publicly-accessible source map(s) -- full source code leaked

2 publicly-accessible JavaScript source map(s)

Source maps (.js.map files) reveal the original source code -- variable names, comments, file structure, and sometimes secrets that were stripped from the bundled output. They're shipped to production by mistake almost universally; the standard fix is a build-tool config flag (Webpack: `devtool: false` or `'hidden-source-map'`; Vite: `build.sourcemap: false`; Next.js: `productionBrowserSourceMaps: false`). Once removed, audit your CDN/edge cache to evict any previously-cached .map URLs. Sample accessible URLs: https://nu11cyber.com/assets/index-CPmHY95N.js.map, https://nu11cyber.com/trusted-types.js.map.

F

Email Security

Action

no DMARC, no SPF

FIX

no DMARC, no SPF

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.

No SPF record found

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.

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

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.

Why this matters

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.

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

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

HSTS is enabled with preload

Got: max-age=31536000; includeSubDomains; preload

X-Content-Type-Options is properly configured

Got: nosniff

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

Referrer-Policy is properly configured

Got: same-origin

Permissions-Policy is set

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

Content-Security-Policy is present

Got: default-src 'self'; script-src 'self' 'sha256-LwlyZ40NRTXa//NUj9jB46qFF2SwkODu0W…

Cross-Origin-Opener-Policy is properly configured

Got: same-origin

Cross-Origin-Embedder-Policy is set

Got: credentialless

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

This header prevents clickjacking by controlling who can embed your page in a frame. Set it to DENY or SAMEORIGIN.

Expected: DENY

Why 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

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

9 of 11 CSP checks passed

PASS

9 of 11 CSP checks passed

Raw CSP policy

Got: default-src 'self'; script-src 'self' 'sha256-LwlyZ40NRTXa//NUj9jB46qFF2SwkODu0WXpcXI2VL0=' https://images.dmca.com https://static.cloudflareinsights.com; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob: https://github.com https://*.githubusercontent.com https://images.dmca.com https://beavercheck.com; font-src 'self'; connect-src 'self' https://static.cloudflareinsights.com; frame-ancestors 'self'; frame-src 'none'; object-src 'none'; base-uri 'self'; form-action 'self'; upgrade-insecure-requests

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 'self'

form-action directive is set

Got: form-action 'self'

upgrade-insecure-requests is enabled

Content-Security-Policy-Report-Only is also set

A report-only policy is active alongside the enforcing policy for monitoring.

Got: require-trusted-types-for 'script'; trusted-types default

A report-only policy is active alongside the enforcing policy for monitoring.

Why this matters

Running enforcing + Report-Only in parallel lets you test stricter directives safely before promoting them.

Source: MDN CSP

Parsed Policy

default-src 'self'

script-src 'self''sha256-LwlyZ40NRTXa//NUj9jB46qFF2SwkODu0WXpcXI2VL0='https://images.dmca.comhttps://static.cloudflareinsights.com

style-src 'self''unsafe-inline'

img-src 'self'data:blob:https://github.comhttps://*.githubusercontent.comhttps://images.dmca.comhttps://beavercheck.com

font-src 'self'

connect-src 'self'https://static.cloudflareinsights.com

frame-ancestors 'self'

frame-src 'none'

object-src 'none'

base-uri 'self'

form-action 'self'

upgrade-insecure-requests

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 negotiated

Got: h2

OCSP stapling not enabled

Without stapling, the browser performs a separate OCSP roundtrip on first connection -- adding latency and leaking the visited host to the CA. Enable OCSP stapling on your TLS server.

Certificate is valid (expires in 87 days)

Got: 2027-01-11T07:29:21Z

Certificate chain has 4 certificates

Certificate uses modern signature algorithm

Got: ECDSA-SHA384

Certificate covers 2 domain(s)

Got: *.nu11cyber.com, nu11cyber.com

Certificate is issued by a trusted CA

Got: CN=YE2,O=Let's Encrypt,C=US

Without stapling, the browser performs a separate OCSP roundtrip on first connection -- adding latency and leaking the visited host to the CA. Enable OCSP stapling on your TLS server.

Why this matters

Without OCSP stapling, every first-time visitor pays an extra OCSP roundtrip — and the CA learns who's visiting your site.

Learn more ▾

OCSP stapling has the server fetch its own revocation status from the CA and attach the signed response to the TLS handshake. Without it, browsers contact the CA directly: extra latency for the user and a privacy leak (the CA sees who connected). Enable ssl_stapling on (nginx) / SSLUseStapling On (Apache) / OCSPStapling = on (Caddy auto-enables).

Source: RFC 6961 / Mozilla Server-Side TLS guide

Connection

Protocol

TLS 1.3

Cipher Suite

TLS_AES_128_GCM_SHA256

HTTP Version

h2 (HTTP/2)

Certificate Chain

Leaf Certificate

Subject CN=nu11cyber.comIssuer CN=YE2,O=Let's Encrypt,C=USValid 2026-10-13T07:29:22Z → 2027-01-11T07:29:21ZExpires in 87 days SANs *.nu11cyber.com, nu11cyber.comSignature ECDSA-SHA384Serial 55c62119eb83f2b5dd8b5e43901f7162b3f

Intermediate (CA Certificate)

Subject CN=YE2,O=Let's Encrypt,C=USIssuer CN=Root YE,O=ISRG,C=USValid 2025-09-03T00:00:00Z → 2028-09-02T23:59:59ZExpires in 688 days Signature ECDSA-SHA384Serial 4df3b15dd6c0784c507cd37b58e6f115

Intermediate (CA Certificate)

Subject CN=Root YE,O=ISRG,C=USIssuer CN=ISRG Root X2,O=Internet Security Research Group,C=USValid 2026-05-13T00:00:00Z → 2032-09-02T23:59:59ZExpires in 2149 days Signature ECDSA-SHA384Serial 872165fc34b6e5fba8add5b3705fb53a

Intermediate (CA Certificate)

Subject CN=ISRG Root X2,O=Internet Security Research Group,C=USIssuer CN=ISRG Root X1,O=Internet Security Research Group,C=USValid 2026-05-13T00:00:00Z → 2032-09-02T23:59:59ZExpires in 2149 days Signature SHA256-RSASerial 6c8f1dc727c7117f7baf853ac980f9cd

A+

Cookie Security

1 cookies analyzed, 3 checks passed

PASS

1 cookies analyzed, 3 checks passed

Cookie 'sl-session' has the Secure flag

Cookie 'sl-session' has the HttpOnly flag

Cookie 'sl-session' has SameSite=None

1 cookies analyzed

Name	Secure	HttpOnly	SameSite	Size	Issues
sl-session	✓	✓	None	34 B	—

A+

Cookie Hygiene

All 1 cookie(s) pass hygiene checks

PASS

All 1 cookie(s) pass hygiene checks

A

WAF / Bot Protection

Cloudflare

PASS

Cloudflare

Cloudflare detected

Detected via: cf-ray: a4af32084950d41c-DFW

Got: Cloudflare

A+

security.txt

Vulnerability disclosure policy

PASS

Vulnerability disclosure policy

security.txt found

Got: https://nu11cyber.com/.well-known/security.txt

security.txt

Contact: mailto:contact@nu11cyber.com

Expires: 2027-05-28T00:00:00.000Z

Policy: https://nu11cyber.com/.well-known/security.txt

A+

Cross-Origin Tab Safety

No new-tab links found -- no tabnabbing surface

PASS

No new-tab links found -- no tabnabbing surface

No new-tab links present

A+

CSP Inline-Style Readiness

No inline style attributes -- strict CSP is feasible

PASS

No inline style attributes -- strict CSP is feasible

No inline style attributes detected

A+

Trusted Types (XSS Sink Hardening)

Trusted Types in report-only mode -- rollout in progress

PASS

Trusted Types in report-only mode -- rollout in progress

Trusted Types running in report-only mode -- enforcement rollout in progress

Got: require-trusted-types-for 'script'; trusted-types default

A+

Bot Challenge Detection

Scan reached real page content (no bot-protection interstitial)

PASS

Scan reached real page content (no bot-protection interstitial)

No bot-protection interstitial detected -- the rest of the report reflects the real page

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+

Subresource Integrity Adoption

100% SRI adoption (2/2 third-party resources)

PASS

100% SRI adoption (2/2 third-party resources)

SRI adoption: 2/2 third-party resources protected (100%)

Of 2 third-party `<script>` / `<link rel=stylesheet>` resources, 2 (100%) 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. 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: 100% (2/2)

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

70% high-risk feature coverage (7/10)

PASS

70% high-risk feature coverage (7/10)

Permissions-Policy covers 7/10 high-risk features (70%)

The Permissions-Policy header explicitly declares policies for 7/10 high-risk features. Covered: camera, microphone, geolocation, payment, usb, accelerometer, gyroscope Not declared (default-allow): serial, midi, magnetometer 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: 70% (7/10)

A+

Referrer-Policy Strictness

Referrer-Policy is `same-origin` (strict -- Referer sent only on same-origin requests)

PASS

Referrer-Policy is `same-origin` (strict -- Referer sent only on same-origin requests)

Referrer-Policy: `same-origin` -- strict -- Referer sent only on same-origin requests

Full URL Referer header on same-origin requests; no Referer at all on cross-origin. Strong privacy posture; same-origin analytics still work.

Got: same-origin

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+

Subresource Integrity

2 of 2 external resources have SRI

PASS

2 of 2 external resources have SRI

script from images.dmca.com has SRI protection

script from static.cloudflareinsights.com has SRI protection

SRI Coverage 2 / 2 of external resources have integrity hashes

Tag	Domain	Integrity
<script>	images.dmca.com	✓ Protected
<script>	static.cloudflareinsights.com	✓ Protected

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

7 directives, 0 missing

PASS

7 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

accelerometer=() — blocked for all origins

gyroscope=() — blocked for all origins

Raw Header

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

Feature Permissions

Blocked Self Only Unrestricted Not Set

camera Blocked

microphone Blocked

geolocation Blocked

payment Blocked

usb Blocked

accelerometer Blocked

gyroscope 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)