Security - https://www.revolut.com BeaverCheck Audit

F

Content Security Policy

Action

No enforcing CSP policy found

FIX

No enforcing CSP policy found

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

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/b/625261456364/api.js?onload=OBvX9&render=explicit

SRI Coverage 0 / 1 of external resources have integrity hashes

Tag	Domain	Integrity
<script>	challenges.cloudflare.com	✗ Missing

F

Email Security

Action

No DMARC

FIX

No DMARC

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

security.txt

Action

No /.well-known/security.txt published

FIX

security.txt

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

B

Security Headers

8 of 10 headers properly configured

REVIEW

8 of 10 headers properly configured

HSTS max-age is too short (2592000s, should be ≥ 31536000s)

A short max-age leaves a window for downgrade attacks. Set max-age to at least 31536000 (1 year).

Got: max-age=2592000; includeSubDomains; preload Expected: max-age=31536000; includeSubDomains

X-Content-Type-Options is properly configured

Got: nosniff

X-Frame-Options is properly configured

Got: SAMEORIGIN

Referrer-Policy is properly configured

Got: same-origin

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=()

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'

Cross-Origin-Opener-Policy is properly configured

Got: same-origin

Cross-Origin-Embedder-Policy is set

Got: require-corp

X-Powered-By header is not present

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 short max-age leaves a window for downgrade attacks. Set max-age to at least 31536000 (1 year).

Expected: max-age=31536000; includeSubDomains

Why this matters

Short HSTS max-age leaves a downgrade-attack window every time the cache expires — set ≥ 1 year.

Learn more ▾

max-age below 31536000 (1 year) is below industry recommendation. The browser forgets the HSTS policy and re-exposes first-visit downgrade attacks. Set to 63072000 (2 years) and add `includeSubDomains; preload` to qualify for the HSTS preload list.

Source: RFC 6797 / hstspreload.org

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

B

Transport Security

HTTP/3, HSTS, and TLS version analysis

REVIEW

HTTP/3, HSTS, and TLS version analysis

HTTP/3 (QUIC) not advertised

HTTP/3 eliminates head-of-line blocking. If your CDN supports it, consider enabling it.

HSTS max-age is short: 30 days

HSTS max-age should be at least 1 year (31536000 seconds).

Got: max-age=2592000 (expected 31536000)

HSTS preload enabled

TLS 1.3 in use (fastest handshake, 1-RTT)

A+

TLS & Certificates

TLS 1.3, 7 checks passed

PASS

TLS 1.3, 7 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 not negotiated

HTTP/2 provides multiplexing and header compression for better performance.

Got: http/1.1

Certificate is valid (expires in 313 days)

Got: 2027-02-14T23:59:59Z

Certificate chain has 3 certificates

Certificate uses modern signature algorithm

Got: SHA256-RSA

Certificate covers 1 domain(s)

Got: *.revolut.com

Certificate is issued by a trusted CA

Got: CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1,O=DigiCert Inc,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=*.revolut.com,O=Revolut Ltd,L=London,C=GBIssuer CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1,O=DigiCert Inc,C=USValid 2026-01-14T00:00:00Z → 2027-02-14T23:59:59ZExpires in 313 days SANs *.revolut.comSignature SHA256-RSASerial 8af6c9dc764ab89e31177291a06ab93

Intermediate (CA Certificate)

Subject CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1,O=DigiCert Inc,C=USIssuer CN=DigiCert Global Root G2,OU=www.digicert.com,O=DigiCert Inc,C=USValid 2020-09-24T00:00:00Z → 2030-09-23T23:59:59ZExpires in 1630 days Signature SHA256-RSASerial 85f94c02d857be8cc14ff53eda23e2a

Intermediate (CA Certificate)

Subject CN=DigiCert Global Root G2,OU=www.digicert.com,O=DigiCert Inc,C=USIssuer CN=DigiCert Global Root CA,OU=www.digicert.com,O=DigiCert Inc,C=USValid 2024-01-18T00:00:00Z → 2031-11-09T23:59:59ZExpires in 2042 days Signature SHA256-RSASerial fe032ab844d033106c50c8e13c8b068

A+

Cookie Security

1 cookies analyzed, 3 checks passed

PASS

1 cookies analyzed, 3 checks passed

Cookie '__cf_bm' has the Secure flag

Cookie '__cf_bm' has the HttpOnly flag

Cookie '__cf_bm' has SameSite=None

1 cookies analyzed

Name	Secure	HttpOnly	SameSite	Size	Issues
__cf_bm	✓	✓	None	177 B	—

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

A+

Permissions-Policy

17 directives, 0 missing

PASS

17 directives, 0 missing

accelerometer=() — blocked for all origins

browsing-topics=() — blocked for all origins

camera=() — blocked for all origins

clipboard-read=() — blocked for all origins

clipboard-write=() — blocked for all origins

geolocation=() — blocked for all origins

gyroscope=() — blocked for all origins

hid=() — blocked for all origins

interest-cohort=() — blocked for all origins

magnetometer=() — blocked for all origins

microphone=() — blocked for all origins

payment=() — blocked for all origins

publickey-credentials-get=() — blocked for all origins

screen-wake-lock=() — blocked for all origins

serial=() — blocked for all origins

sync-xhr=() — blocked for all origins

usb=() — blocked for all origins

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=()

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