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Security

· 12 checks — HTTP headers, CSP, TLS handshake, and cookie hygiene rolled into one auditable list.
SCORE
75
GRADE
C
FIX
3
REVIEW
2
PASS
7
INFO
0
Checks
12
7 PASS 2 REVIEW 3 FIX
F
Subresource Integrity
Action
0 of 16 external resources have SRI
FIX
0 of 16 external resources have SRI
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-T18E1GTPQG&cx=c&gtm=4e6481
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=AW-979253717&cx=c&gtm=4e6481
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/gtm.js?id=GTM-PRBZ42F
Warning::
External link from cdn-production-opera-website.operacdn.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://cdn-production-opera-website.operacdn.com/staticfiles/latinext.a83b049961e4.css
Warning::
External link from cdn-production-opera-website.operacdn.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://cdn-production-opera-website.operacdn.com/staticfiles/main.2c2b1c91c74f.css
Warning::
External link from cdn-production-opera-website.operacdn.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://cdn-production-opera-website.operacdn.com/staticfiles/main-320.7f746f3896e8.css
Warning::
External link from cdn-production-opera-website.operacdn.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://cdn-production-opera-website.operacdn.com/staticfiles/main-640.eb207c945869.css
Warning::
External link from cdn-production-opera-website.operacdn.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://cdn-production-opera-website.operacdn.com/staticfiles/main-768.c095843b336b.css
Warning::
External link from cdn-production-opera-website.operacdn.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://cdn-production-opera-website.operacdn.com/staticfiles/main-1024.aad96fd23526.css
Warning::
External link from cdn-production-opera-website.operacdn.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://cdn-production-opera-website.operacdn.com/staticfiles/main-1224.cd20c7ec9f47.css
Warning::
External link from cdn-production-opera-website.operacdn.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://cdn-production-opera-website.operacdn.com/staticfiles/main-1824.b6240ca8263f.css
Warning::
External link from cdn-production-opera-website.operacdn.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://cdn-production-opera-website.operacdn.com/staticfiles/main-1924.0713dcc8a47e.css
Warning::
External script from cdn-production-opera-website.operacdn.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://cdn-production-opera-website.operacdn.com/staticfiles/traffic.fa1e9a35091f.js
Warning::
External script from cdn-production-opera-website.operacdn.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://cdn-production-opera-website.operacdn.com/staticfiles/runtime-homepage.60b2fe689c40.js
Warning::
External script from cdn-production-opera-website.operacdn.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://cdn-production-opera-website.operacdn.com/staticfiles/vendors-homepage.31ca4346f8f2.js
Warning::
External script from cdn-production-opera-website.operacdn.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://cdn-production-opera-website.operacdn.com/staticfiles/mainHomepage.536f7d9ecacc.js
SRI Coverage 0 / 16 of external resources have integrity hashes
TagDomainIntegrity
<script>www.googletagmanager.com✗ Missing
<script>www.googletagmanager.com✗ Missing
<script>www.googletagmanager.com✗ Missing
<link>cdn-production-opera-website.operacdn.com✗ Missing
<link>cdn-production-opera-website.operacdn.com✗ Missing
<link>cdn-production-opera-website.operacdn.com✗ Missing
<link>cdn-production-opera-website.operacdn.com✗ Missing
<link>cdn-production-opera-website.operacdn.com✗ Missing
<link>cdn-production-opera-website.operacdn.com✗ Missing
<link>cdn-production-opera-website.operacdn.com✗ Missing
<link>cdn-production-opera-website.operacdn.com✗ Missing
<link>cdn-production-opera-website.operacdn.com✗ Missing
<script>cdn-production-opera-website.operacdn.com✗ Missing
<script>cdn-production-opera-website.operacdn.com✗ Missing
<script>cdn-production-opera-website.operacdn.com✗ Missing
<script>cdn-production-opera-website.operacdn.com✗ Missing
F
Email Security
Action
No DMARC
FIX
No DMARC
Warning::
No DMARC record found
Without DMARC, email receivers have no policy for handling authentication failures.
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.

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

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=()
B
Content Security Policy
3 of 10 CSP checks passed
REVIEW
3 of 10 CSP checks passed
Info::
Raw CSP policy
Got: frame-ancestors 'self' https://*.opera.com; upgrade-insecure-requests;
Warning::
default-src directive is missing
default-src provides a fallback for other directives. Set it to restrict default resource loading.
Expected: default-src 'self'
Info::
No script-src or default-src to check for 'unsafe-inline'
Info::
No script-src or default-src to check for 'unsafe-eval'
Info::
No script-src or default-src to check for wildcard
Info::
object-src falls back to default-src
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://*.opera.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 enabled

default-src provides a fallback for other directives. Set it to restrict default resource loading.

Expected: default-src 'self'
Why this matters

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

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.

Parsed Policy

frame-ancestors 'self'https://*.opera.com
upgrade-insecure-requests
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
A
Security Headers
8 of 10 headers properly configured
PASS
8 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: frame-ancestors 'self' https://*.opera.com; upgrade-insecure-requests;
Info::
Cross-Origin-Opener-Policy is properly configured
Got: 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

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 1.2, 7 checks passed
PASS
TLS 1.2, 7 checks passed
Info::
TLS 1.2 is used
Got: TLS 1.2
Info::
TLS 1.3 is not negotiated
TLS 1.3 offers improved performance and security. Consider enabling it.
Got: TLS 1.2
Info::
Strong cipher suite is used
Got: TLS_ECDHE_ECDSA_WITH_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 106 days)
Got: 2026-07-27T23:59:59Z
Info::
Certificate chain has 3 certificates
Info::
Certificate uses modern signature algorithm
Got: SHA256-RSA
Info::
Certificate covers 2 domain(s)
Got: www.opera.com, opera.com
Info::
Certificate is issued by a trusted CA
Got: CN=Trust Provider B.V. TLS RSA CA G1,OU=Domain Validated SSL,O=Trust Provider B.V.,C=NL

TLS 1.3 offers improved performance and security. Consider enabling it.

Why this matters

TLS 1.3 not in use — connection falls back to 1.2 and pays the extra round-trip.

Learn more ▾

Most clients prefer TLS 1.3 if both sides support it. If your server has TLS 1.3 enabled but it's not being negotiated, check for a downgrade-attack mitigation issue or a misconfigured cipher list. nginx ≥ 1.13.0 and OpenSSL ≥ 1.1.1 support TLS 1.3.

Source: RFC 8446 / Mozilla SSL Config

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 1.2
Cipher Suite
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
HTTP Version
HTTP/1.1

Certificate Chain

Leaf Certificate
Subject CN=www.opera.comIssuer CN=Trust Provider B.V. TLS RSA CA G1,OU=Domain Validated SSL,O=Trust Provider B.V.,C=NLValid 2025-06-27T00:00:00Z → 2026-07-27T23:59:59ZExpires in 106 days SANs www.opera.com, opera.comSignature SHA256-RSASerial 4c71cc2a94a893681c73690ff2fe7a1
Intermediate (CA Certificate)
Subject CN=Trust Provider B.V. TLS RSA CA G1,OU=Domain Validated SSL,O=Trust Provider B.V.,C=NLIssuer CN=DigiCert Global Root G2,OU=www.digicert.com,O=DigiCert Inc,C=USValid 2017-11-02T12:25:10Z → 2027-11-02T12:25:10ZExpires in 568 days Signature SHA256-RSASerial ec411edf002f73036c4e5d42f3e34f2
Intermediate (CA Certificate)
Subject CN=DigiCert Global Root G2,OU=www.digicert.com,O=DigiCert Inc,C=USIssuer CN=DigiCert Global Root G2,OU=www.digicert.com,O=DigiCert Inc,C=USValid 2013-08-01T12:00:00Z → 2038-01-15T12:00:00ZExpires in 4295 days Signature SHA256-RSASerial 33af1e6a711a9a0bb2864b11d09fae5
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+
security.txt
Signed, 3 contact(s) — RFC 9116 compliant
PASS

security.txt

Contact: https://security.opera.com, https://bugcrowd.com/opera, mailto:security@opera.com
Expires: 2026-04-30T00:00:00.000Z
Encryption: https://security.opera.com/gpg-key/, openpgp4fpr:9054676EE72E26544AA2B642200D06B91A99301A
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
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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