Skip to content
https://snu.ac.kr

Security

· 12 checks — HTTP headers, CSP, TLS handshake, and cookie hygiene rolled into one auditable list.
SCORE
69
GRADE
D
FIX
4
REVIEW
3
PASS
5
INFO
0
Checks
12
5 PASS 3 REVIEW 4 FIX
F
Subresource Integrity
Action
0 of 3 external resources have SRI
FIX
0 of 3 external resources have SRI
Warning::
External script from ssl.pstatic.net lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://ssl.pstatic.net/melona/libs/gfp-nac-module/synchronizer.js
Warning::
External script from wcs.naver.net lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: //wcs.naver.net/wcslog.js
Warning::
External script from www.googletagmanager.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://www.googletagmanager.com/gtag/js?id=G-GX37CPT7T3
SRI Coverage 0 / 3 of external resources have integrity hashes
TagDomainIntegrity
<script>ssl.pstatic.net Missing
<script>wcs.naver.net Missing
<script>www.googletagmanager.com Missing
D
Email Security
Action
DMARC: none
FIX
DMARC: none
Warning::
DMARC policy is none — monitoring only
This only monitors, it doesn't block spoofed emails. Change to p=quarantine or p=reject.
DMARC
Policy none — monitoring only, does not block spoofing Record v=DMARC1; p=none; aspf=r

This only monitors, it doesn't block spoofed emails. Change to p=quarantine or p=reject.

Why this matters

DMARC p=none collects reports but doesn't actually block spoofed mail — phishing emails still reach inboxes.

Learn more

DMARC's three policies are p=none (monitor only), p=quarantine (mark as spam), and p=reject (bounce). Most domains start at p=none to gather data, but stay there forever, leaving spoofers unblocked. After 30 days of clean DMARC reports, graduate to p=quarantine, then p=reject.

Source: DMARC.org / NIST

D
Permissions-Policy
Action
No header set
FIX
No header set
Warning::
No Permissions-Policy header
Consider adding a Permissions-Policy header to restrict browser feature access from embedded content.

No Permissions-Policy header set.

Without this header, embedded iframes can request access to sensitive device features.

Suggested header
Permissions-Policy: camera=(), microphone=(), geolocation=(), payment=(), usb=()
D
security.txt
Action
No /.well-known/security.txt published
FIX

security.txt

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

B
Security Headers
7 of 10 headers properly configured
REVIEW
7 of 10 headers properly configured
Info::
Strict-Transport-Security is properly configured
Got: max-age=63072000; 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: strict-origin-when-cross-origin
Warning::
Permissions-Policy header is missing
Controls which browser features (camera, microphone, geolocation) are allowed. Set it to restrict unused features.
Expected: geolocation=(), camera=(), microphone=()
Info::
Content-Security-Policy is present
Got: default-src 'self' https://www.snu.ac.kr https://en.snu.ac.kr https://admission.…
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

Controls which browser features (camera, microphone, geolocation) are allowed. Set it to restrict unused features.

Expected: geolocation=(), camera=(), microphone=()
Why this matters

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'.

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

C
Content Security Policy
Action
4 of 10 CSP checks passed
REVIEW
4 of 10 CSP checks passed
Info::
Raw CSP policy
Got: default-src 'self' https://www.snu.ac.kr https://en.snu.ac.kr https://admission.snu.ac.kr https://identity.snu.ac.kr https://adminservice.snu.ac.kr https://www.google-analytics.com https://nam.veta.naver.com https://wcs.naver.com https://www.google-analytics.com; script-src 'self' 'nonce-b0ea47ac5d0dcc589b3d2e47ebba76c1a9d92826e5c6cf9a36ae24b7cb17b8b5' 'unsafe-eval' https://nf4.snu.ac.kr https://cse.google.com https://code.highcharts.com https://developers.kakao.com https://t1.kakaocdn.net https://developers.kakao.com https://developers.kakao.com https://t1.kakaocdn.net https://ssl.daumcdn.net https://t1.daumcdn.net https://ssl.pstatic.net https://wcs.naver.net https://wcs.naver.com https://www.googletagmanager.com https://www.google-analytics.com https://www.google.com https://www.gstatic.com; style-src 'self' 'unsafe-inline' https://www.google.com https://cdn.jsdelivr.net https://t1.daumcdn.net https://fonts.googleapis.com https://fonts.gstatic.com https://www.gstatic.com https://www.google-analytics.com; img-src 'self' blob: https://bird.snu.ac.kr https://www.snu.or.kr https://www.google.com https://clients1.google.com https://www.snu.ac.kr https://now.snu.ac.kr https://t1.daumcdn.net https://mts.daumcdn.net https://stlog1-local.kakao.com https://www.snu.ac.kr https://en.snu.ac.kr https://admission.snu.ac.kr https://identity.snu.ac.kr https://adminservice.snu.ac.kr https://www.googletagmanager.com https://www.gstatic.com https://www.google-analytics.com; font-src 'self' https://fastly.jsdelivr.net https://use.typekit.net https://cdn.jsdelivr.net https://fonts.gstatic.com; frame-src 'self' https://www.google.com https://www.youtube.com https://map.google.com; frame-ancestors 'self' https://www.google.com https://www.youtube.com https://map.google.com; object-src 'self'
Info::
default-src directive is set
Got: default-src 'self' https://www.snu.ac.kr https://en.snu.ac.kr https://admission.snu.ac.kr https://identity.snu.ac.kr https://adminservice.snu.ac.kr https://www.google-analytics.com https://nam.veta.naver.com https://wcs.naver.com https://www.google-analytics.com
Info::
No 'unsafe-inline' in script source
Critical::
'unsafe-eval' found in script source
'unsafe-eval' allows eval() and similar functions, enabling code injection. Remove it.
Got: script-src 'self' 'nonce-b0ea47ac5d0dcc589b3d2e47ebba76c1a9d92826e5c6cf9a36ae24b7cb17b8b5' 'unsafe-eval' https://nf4.snu.ac.kr https://cse.google.com https://code.highcharts.com https://developers.kakao.com https://t1.kakaocdn.net https://developers.kakao.com https://developers.kakao.com https://t1.kakaocdn.net https://ssl.daumcdn.net https://t1.daumcdn.net https://ssl.pstatic.net https://wcs.naver.net https://wcs.naver.com https://www.googletagmanager.com https://www.google-analytics.com https://www.google.com https://www.gstatic.com
Info::
No wildcard in script source
Warning::
object-src allows plugin content
Set object-src to 'none' to prevent Flash/Java plugin exploits.
Got: object-src 'self' Expected: object-src 'none'
Warning::
base-uri directive is missing
Without base-uri, attackers can inject a <base> tag to hijack relative URLs. Set it to 'self' or 'none'.
Expected: base-uri 'self'
Info::
frame-ancestors directive is set
Got: frame-ancestors 'self' https://www.google.com https://www.youtube.com https://map.google.com
Warning::
form-action directive is missing
form-action restricts where forms can submit data, preventing form hijacking.
Expected: 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-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

Set object-src to 'none' to prevent Flash/Java plugin exploits.

Expected: object-src 'none'
Why this matters

object-src open in CSP allows Flash/PDF/plugin embedding — a now-deprecated attack vector that should be explicitly blocked.

Learn more

object-src controls <object>, <embed>, and <applet> elements. Modern sites have no need for plugins; setting `object-src 'none'` blocks an entire class of legacy XSS vectors at zero cost. If your CSP missed it, add the directive.

Source: MDN CSP

Without base-uri, attackers can inject a <base> tag to hijack relative URLs. Set it to 'self' or 'none'.

Expected: base-uri 'self'
Why this matters

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.

Expected: form-action 'self'
Why this matters

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

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'https://www.snu.ac.krhttps://en.snu.ac.krhttps://admission.snu.ac.krhttps://identity.snu.ac.krhttps://adminservice.snu.ac.krhttps://www.google-analytics.comhttps://nam.veta.naver.comhttps://wcs.naver.comhttps://www.google-analytics.com
script-src 'self''nonce-b0ea47ac5d0dcc589b3d2e47ebba76c1a9d92826e5c6cf9a36ae24b7cb17b8b5''unsafe-eval'https://nf4.snu.ac.krhttps://cse.google.comhttps://code.highcharts.comhttps://developers.kakao.comhttps://t1.kakaocdn.nethttps://developers.kakao.comhttps://developers.kakao.comhttps://t1.kakaocdn.nethttps://ssl.daumcdn.nethttps://t1.daumcdn.nethttps://ssl.pstatic.nethttps://wcs.naver.nethttps://wcs.naver.comhttps://www.googletagmanager.comhttps://www.google-analytics.comhttps://www.google.comhttps://www.gstatic.com
style-src 'self''unsafe-inline'https://www.google.comhttps://cdn.jsdelivr.nethttps://t1.daumcdn.nethttps://fonts.googleapis.comhttps://fonts.gstatic.comhttps://www.gstatic.comhttps://www.google-analytics.com
img-src 'self'blob:https://bird.snu.ac.krhttps://www.snu.or.krhttps://www.google.comhttps://clients1.google.comhttps://www.snu.ac.krhttps://now.snu.ac.krhttps://t1.daumcdn.nethttps://mts.daumcdn.nethttps://stlog1-local.kakao.comhttps://www.snu.ac.krhttps://en.snu.ac.krhttps://admission.snu.ac.krhttps://identity.snu.ac.krhttps://adminservice.snu.ac.krhttps://www.googletagmanager.comhttps://www.gstatic.comhttps://www.google-analytics.com
font-src 'self'https://fastly.jsdelivr.nethttps://use.typekit.nethttps://cdn.jsdelivr.nethttps://fonts.gstatic.com
frame-src 'self'https://www.google.comhttps://www.youtube.comhttps://map.google.com
frame-ancestors 'self'https://www.google.comhttps://www.youtube.comhttps://map.google.com
object-src 'self'
C
CORS Configuration
Action
Origin: *
REVIEW
Origin: *
Info::
Access-Control-Allow-Origin: * — unrestricted
Any website can read this resource's response. Appropriate for public APIs but not for user-specific content.
Info::
Origin reflection not testable with a single request
Some servers reflect the request Origin header. This requires manual testing with a crafted Origin header.
CORS Configuration Permissive
Allow-Origin *

Any website can read responses from this resource.

HeaderValueStatus
Access-Control-Allow-Origin*
Access-Control-Allow-HeadersAccept, Accept-Encoding, Accept-Language, Cache-Control, Connection, Content-Length, Content-Type, Host, Origin, Pragma, Referer, User-Agent, Content-Disposition, responseType, Access-Control-Allow-Origin

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 & 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 83 days)
Got: 2026-07-15T08:41:01Z
Info::
Certificate chain has 3 certificates
Info::
Certificate uses modern signature algorithm
Got: SHA256-RSA
Info::
Certificate covers 2 domain(s)
Got: *.snu.ac.kr, snu.ac.kr
Info::
Certificate is issued by a trusted CA
Got: CN=GlobalSign RSA OV SSL CA 2018,O=GlobalSign nv-sa,C=BE

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=*.snu.ac.kr,O=SEOUL NATIONAL UNIVERSITY,L=Gwanak-gu,ST=Seoul,C=KRIssuer CN=GlobalSign RSA OV SSL CA 2018,O=GlobalSign nv-sa,C=BEValid 2025-06-13T08:41:02Z → 2026-07-15T08:41:01ZExpires in 83 days SANs *.snu.ac.kr, snu.ac.krSignature SHA256-RSASerial 3396af52deed799010d5c98b
Intermediate (CA Certificate)
Subject CN=GlobalSign RSA OV SSL CA 2018,O=GlobalSign nv-sa,C=BEIssuer CN=GlobalSign,OU=GlobalSign Root CA - R3,O=GlobalSignValid 2018-11-21T00:00:00Z → 2028-11-21T00:00:00ZExpires in 943 days Signature SHA256-RSASerial 1ee5f221dfc623bd4333a8557
Intermediate (CA Certificate)
Subject CN=GlobalSign,OU=GlobalSign Root CA - R3,O=GlobalSignIssuer CN=GlobalSign,OU=GlobalSign Root CA - R3,O=GlobalSignValid 2009-03-18T10:00:00Z → 2029-03-18T10:00:00ZExpires in 1060 days Signature SHA256-RSASerial 4000000000121585308a2
A+
Cookie Security
1 cookies analyzed, 3 checks passed
PASS
1 cookies analyzed, 3 checks passed
Info::
Cookie 'THESESSID' has the Secure flag
Info::
Cookie 'THESESSID' has the HttpOnly flag
Info::
Cookie 'THESESSID' has SameSite=Strict
1 cookies analyzed
NameSecureHttpOnlySameSiteSizeIssues
THESESSIDStrict41 B
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::
No security.txt found
Consider adding a security.txt at /.well-known/security.txt.
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 Not foundSecurity Policy
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.

Send Feedback