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Security

· 13 checks — HTTP headers, CSP, TLS handshake, and cookie hygiene rolled into one auditable list.
SCORE
80
GRADE
B
FIX
2
REVIEW
3
PASS
8
INFO
0
Checks
13
8 PASS 3 REVIEW 2 FIX
F
Subresource Integrity
Action
0 of 2 external resources have SRI
FIX
0 of 2 external resources have SRI
Warning::
External script from koop.piwik.pro lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://koop.piwik.pro/ppms.js
Warning::
External script from koop.piwik.pro lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://koop.piwik.pro/containers/042a8a3e-7692-4e18-8abf-c3034df672d0.js?use_secure_cookies
SRI Coverage 0 / 2 of external resources have integrity hashes
TagDomainIntegrity
<script>koop.piwik.pro Missing
<script>koop.piwik.pro Missing
D
security.txt
Action
No /.well-known/security.txt published
FIX

security.txt

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

C
Content Security Policy
Action
6 of 10 CSP checks passed
REVIEW
6 of 10 CSP checks passed
Info::
Raw CSP policy
Got: default-src 'self'; script-src 'self' https://*.overheid.nl https://koop.piwik.pro https://api.pdok.nl 'unsafe-inline' 'unsafe-eval' https://unpkg.com https://cdn.jsdelivr.net; style-src 'self' https://*.overheid.nl 'unsafe-inline' https://unpkg.com https://cdn.jsdelivr.net; img-src 'self' data: https://*.overheid.nl https://api.pdok.nl https://koop.piwik.pro https:; font-src 'self' data: https://*.overheid.nl; connect-src 'self' https://*.overheid.nl https://koop.piwik.pro https://api.pdok.nl; frame-src https://koop.piwik.pro https://*.overheid.nl https://api.pdok.nl; frame-ancestors 'self'; base-uri 'self'; form-action 'self';
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 'self' https://*.overheid.nl https://koop.piwik.pro https://api.pdok.nl 'unsafe-inline' 'unsafe-eval' https://unpkg.com https://cdn.jsdelivr.net
Critical::
'unsafe-eval' found in script source
'unsafe-eval' allows eval() and similar functions, enabling code injection. Remove it.
Got: script-src 'self' https://*.overheid.nl https://koop.piwik.pro https://api.pdok.nl 'unsafe-inline' 'unsafe-eval' https://unpkg.com https://cdn.jsdelivr.net
Info::
No wildcard in script source
Info::
object-src falls back to default-src
Info::
base-uri is properly restricted
Got: base-uri 'self'
Info::
frame-ancestors directive is set
Got: frame-ancestors 'self'
Info::
form-action directive is set
Got: 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

'unsafe-eval' allows eval() and similar functions, enabling code injection. Remove it.

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

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'https://*.overheid.nlhttps://koop.piwik.prohttps://api.pdok.nl'unsafe-inline''unsafe-eval'https://unpkg.comhttps://cdn.jsdelivr.net
style-src 'self'https://*.overheid.nl'unsafe-inline'https://unpkg.comhttps://cdn.jsdelivr.net
img-src 'self'data:https://*.overheid.nlhttps://api.pdok.nlhttps://koop.piwik.prohttps:
font-src 'self'data:https://*.overheid.nl
connect-src 'self'https://*.overheid.nlhttps://koop.piwik.prohttps://api.pdok.nl
frame-src https://koop.piwik.prohttps://*.overheid.nlhttps://api.pdok.nl
frame-ancestors 'self'
base-uri 'self'
form-action 'self'
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
C
Known vulnerability matches
Action
1 known vulnerability match(es) against detected tech
REVIEW

Known Vulnerabilities

LibraryVersionSeveritySummaryFixed In
Lodash4.17.21medium### Impact Lodash versions 4.0.0 through 4.17.22 are vulnerable to prototype pollution in the `_.unset` and `_.omit` functions. An attacker can pass crafted paths which cause Lodash to delete methods from global prototypes. The issue permits deletion of properties but does not allow overwriting their original behavior. ### Patches This issue is patched on 4.17.23.4.17.23
A
Security Headers
8 of 10 headers properly configured
PASS
8 of 10 headers properly configured
Info::
Strict-Transport-Security is properly configured (consider adding preload)
Got: max-age=31536000; includeSubDomains
Info::
X-Content-Type-Options is properly configured
Got: nosniff
Info::
X-Frame-Options is properly configured
Got: SAMEORIGIN
Info::
Referrer-Policy is properly configured
Got: strict-origin-when-cross-origin
Info::
Permissions-Policy is set
Got: geolocation=(), microphone=(), camera=(), payment=(), usb=(), magnetometer=(), gyroscope=(), accelerometer=()
Info::
Content-Security-Policy is present
Got: default-src 'self'; script-src 'self' https://*.overheid.nl https://koop.piwik.p…
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 not present

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

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_256_GCM_SHA384
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 13 days)
Got: 2026-05-06T09:03:23Z
Warning::
Certificate expires soon (13 days remaining)
Renew the certificate before it expires to avoid browser warnings.
Got: 2026-05-06T09:03:23Z
Info::
Certificate chain has 3 certificates
Info::
Certificate uses modern signature algorithm
Got: SHA256-RSA
Info::
Certificate covers 2 domain(s)
Got: overheid.nl, www.overheid.nl
Info::
Certificate is issued by a trusted CA
Got: CN=certSIGN Web CA,O=CERTSIGN SA,C=RO,2.5.4.97=#130e564154524f2d3138323838323530

Renew the certificate before it expires to avoid browser warnings.

Why this matters

Cert expiry within the renewal window — fix now while there's no user impact, instead of after expiry when there's a full outage.

Learn more

Most CAs recommend renewal at 30 days remaining. Inside that window, schedule the renewal immediately and verify auto-renewal is configured if applicable. Don't wait until 7 days; weekend / holiday timing can leave you exposed.

Source: Let's Encrypt / CA renewal best practice

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_256_GCM_SHA384
HTTP Version
HTTP/1.1

Certificate Chain

Leaf Certificate
Subject CN=overheid.nl,O=Logius,L='s-Gravenhage,ST=Zuid-Holland,C=NLIssuer CN=certSIGN Web CA,O=CERTSIGN SA,C=RO,2.5.4.97=#130e564154524f2d3138323838323530Valid 2025-05-06T09:03:23Z → 2026-05-06T09:03:23ZExpires in 13 days — expiring soon! SANs overheid.nl, www.overheid.nlSignature SHA256-RSASerial 23158bf47c7185f0f8d292
Intermediate (CA Certificate)
Subject CN=certSIGN Web CA,O=CERTSIGN SA,C=RO,2.5.4.97=#130e564154524f2d3138323838323530Issuer OU=certSIGN ROOT CA G2,O=CERTSIGN SA,C=ROValid 2017-02-06T10:18:16Z → 2027-02-06T10:18:16ZExpires in 289 days Signature SHA256-RSASerial 10034b8e66f50920f6c5
Intermediate (CA Certificate)
Subject OU=certSIGN ROOT CA G2,O=CERTSIGN SA,C=ROIssuer OU=certSIGN ROOT CA G2,O=CERTSIGN SA,C=ROValid 2017-02-06T09:27:35Z → 2042-02-06T09:27:35ZExpires in 5768 days Signature SHA256-RSASerial 110034b64ec6362d36
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;
A+
Permissions-Policy
8 directives, 0 missing
PASS
8 directives, 0 missing
Info::
geolocation=() — blocked for all origins
Info::
microphone=() — blocked for all origins
Info::
camera=() — blocked for all origins
Info::
payment=() — blocked for all origins
Info::
usb=() — blocked for all origins
Info::
magnetometer=() — blocked for all origins
Info::
gyroscope=() — blocked for all origins
Info::
accelerometer=() — blocked for all origins

Raw Header

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

Feature Permissions

Blocked Self Only Unrestricted Not Set
geolocation Blocked
microphone Blocked
camera Blocked
payment Blocked
usb Blocked
magnetometer Blocked
gyroscope Blocked
accelerometer Blocked
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 (includeSubDomains)
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.

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