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Security

· 12 checks — HTTP headers, CSP, TLS handshake, and cookie hygiene rolled into one auditable list.
SCORE
78
GRADE
C
FIX
2
REVIEW
2
PASS
8
INFO
0
Checks
12
8 PASS 2 REVIEW 2 FIX
F
Content Security Policy
Action
No enforcing CSP policy found
FIX
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

F
Subresource Integrity
Action
0 of 1 external resources have SRI
FIX
0 of 1 external resources have SRI
Warning::
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/b0a7532ac8ec/api.js?onload=cFyL2&render=explicit
SRI Coverage 0 / 1 of external resources have integrity hashes
TagDomainIntegrity
<script>challenges.cloudflare.com✗ Missing
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
security.txt
Action
Expired (2025-01-01T08:01:00.000Z) — update Expires field
REVIEW

security.txt

Contact: mailto:security@codecademy.com
Expires: 2025-01-01T08:01:00.000Z
Policy: https://codecademy.com/.well-known/security.txt
A
Security Headers
9 of 10 headers properly configured
PASS
9 of 10 headers properly configured
Info::
Strict-Transport-Security is properly configured
Got: max-age=31536000; includeSubDomains; preload
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: same-origin
Info::
Permissions-Policy is set
Got: accelerometer=(),browsing-topics=(),camera=(),clipboard-read=(),clipboard-write=(),geolocation=(),gyroscope=(),hid=(),interest-cohort=(),magnetometer=(),microphone=(),payment=(),publickey-credentials-get=(),screen-wake-lock=(),serial=(),sync-xhr=(),usb=(),xr-spatial-tracking=(self)
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'
Info::
Cross-Origin-Opener-Policy is properly configured
Got: same-origin
Info::
Cross-Origin-Embedder-Policy is set
Got: require-corp
Info::
X-Powered-By header is not present
Info::
Server header is present without version info
Got: cloudflare

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

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_128_GCM_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 87 days)
Got: 2026-07-12T13:27:11Z
Info::
Certificate chain has 3 certificates
Info::
Certificate uses modern signature algorithm
Got: ECDSA-SHA256
Info::
Certificate covers 2 domain(s)
Got: codecademy.com, data.enterprise.staging-eks.codecademy.com
Info::
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=codecademy.comIssuer CN=WE1,O=Google Trust Services,C=USValid 2026-04-13T12:27:13Z → 2026-07-12T13:27:11ZExpires in 87 days SANs codecademy.com, data.enterprise.staging-eks.codecademy.comSignature ECDSA-SHA256Serial 712f19c12d58e9513a57c93cb9ab57f
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 1041 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 652 days Signature SHA256-RSASerial 7fe530bf331343bedd821610493d8a1b
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; sp=reject; adkim=s; aspf=s; rua=mailto:dmarc-forensics@skillsoft.com; ruf=mailto:dmarc-records@skillsoft.com; fo=1:s:d
A+
Permissions-Policy
18 directives, 0 missing
PASS
18 directives, 0 missing
Info::
accelerometer=() — blocked for all origins
Info::
browsing-topics=() — blocked for all origins
Info::
camera=() — blocked for all origins
Info::
clipboard-read=() — blocked for all origins
Info::
clipboard-write=() — blocked for all origins
Info::
geolocation=() — blocked for all origins
Info::
gyroscope=() — blocked for all origins
Info::
hid=() — blocked for all origins
Info::
interest-cohort=() — blocked for all origins
Info::
magnetometer=() — blocked for all origins
Info::
microphone=() — blocked for all origins
Info::
payment=() — blocked for all origins
Info::
publickey-credentials-get=() — blocked for all origins
Info::
screen-wake-lock=() — blocked for all origins
Info::
serial=() — blocked for all origins
Info::
sync-xhr=() — blocked for all origins
Info::
usb=() — blocked for all origins
Info::
xr-spatial-tracking=(self)

Raw Header

accelerometer=() browsing-topics=() camera=() clipboard-read=() clipboard-write=() geolocation=() gyroscope=() hid=() interest-cohort=() magnetometer=() microphone=() payment=() publickey-credentials-get=() screen-wake-lock=() serial=() sync-xhr=() usb=() xr-spatial-tracking=(self)

Feature Permissions

Blocked Self Only Unrestricted Not Set
accelerometer Blocked
browsing-topics Blocked
camera Blocked
clipboard-read Blocked
clipboard-write Blocked
geolocation Blocked
gyroscope Blocked
hid Blocked
interest-cohort Blocked
magnetometer Blocked
microphone Blocked
payment Blocked
publickey-credentials-get Blocked
screen-wake-lock Blocked
serial Blocked
sync-xhr Blocked
usb Blocked
xr-spatial-tracking Self Only
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, preload)
Info::
HSTS preload enabled
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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