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Is crossref.org a Scam? Security Check Results - Crossref

crossref.org Security Report Summary

crossref.org received a security score of 64 out of 100 in Guard's comprehensive security analysis, classified as "Moderate Risk". This report covers Crossref's website security posture. Crossref operates in the Education industry in N/a.

Crossref is a globally recognized non-profit organization that provides open infrastructure to link research objects, entities, and actions, supporting open science and scholarly communication. With a large membership base spanning 23,000 members in 163 countries, Crossref facilitates metadata exchange and supports nearly 2 billion monthly API queries. The website reflects a mature digital presence with comprehensive content, clear navigation, and a professional design tailored to researchers, publishers, and funders. Technically, the site leverages modern web technologies including Hugo, Bootstrap, jQuery, and Algolia search, combined with analytics and user feedback tools, indicating a well-maintained and performant infrastructure. Security posture is solid with HTTPS enforced and no visible vulnerabilities, though the absence of explicit security policies and incident response information suggests room for improvement. Privacy compliance is strong, with clear privacy and cookie policies and consent mechanisms in place. Overall, Crossref's website demonstrates high trustworthiness and professionalism, supporting its role as a key player in scholarly metadata services.

The security scan identified 32 findings across security headers, SSL/TLS, DNS health, email security, GDPR compliance, and NIS2 compliance analysis modules.

Technologies detected: Hugo static site generator, jQuery, Bootstrap, FontAwesome, Algolia search, Matomo analytics, Usersnap feedback widget, DataTables, Masonry layout, MathJax.

About this security scan

Guard performs automated security assessments of websites by analyzing SSL/TLS certificates, HTTP security headers, DNS configuration, email authentication protocols (SPF, DKIM, DMARC), GDPR compliance indicators, NIS2 directive compliance, network exposure, and AI-powered business intelligence. Each report provides domain-specific findings, risk scores, and actionable recommendations.

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Is crossref.org Safe? Security Analysis for Crossref

https://crossref.org

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EducationN/alarge
Hugo static site generatorjQueryBootstrapFontAwesomeAlgolia search+5 more
Analyzed 10/16/2025Completed 7:45:29 PM5mo ago
64
Security Score
MEDIUM RISK

Above Education avg (55)

10,000+

Domains scanned

500+

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Domaincrossref.org
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SEQ SIA

Lastadijas 12 k-3, Riga, Latvia, LV-1050

Reg. No. 40203410806 • VAT LV40203410806

Support: guard@offseq.com+371 2256 5353

AI Summary

Crossref is a globally recognized non-profit organization that provides open infrastructure to link research objects, entities, and actions, supporting open science and scholarly communication. With a large membership base spanning 23,000 members in 163 countries, Crossref facilitates metadata exchange and supports nearly 2 billion monthly API queries. The website reflects a mature digital presence with comprehensive content, clear navigation, and a professional design tailored to researchers, publishers, and funders. Technically, the site leverages modern web technologies including Hugo, Bootstrap, jQuery, and Algolia search, combined with analytics and user feedback tools, indicating a well-maintained and performant infrastructure. Security posture is solid with HTTPS enforced and no visible vulnerabilities, though the absence of explicit security policies and incident response information suggests room for improvement. Privacy compliance is strong, with clear privacy and cookie policies and consent mechanisms in place. Overall, Crossref's website demonstrates high trustworthiness and professionalism, supporting its role as a key player in scholarly metadata services.

Detected Technologies

Hugo static site generatorjQueryBootstrapFontAwesomeAlgolia searchMatomo analyticsUsersnap feedback widgetDataTablesMasonry layoutMathJax

9 urgent findings need attention

9 high

  • + 1 more findings in the full report below
Continuous monitoring

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Guard tracks your live infrastructure daily: certificate expiry, DNS & mail authentication drift, uptime changes, subdomain inventory, and unexpected tracker or content shifts. A full timeline captures every diff so you can prove remediation and spot regressions instantly.

Security drift alerts

Risk score drops, new high-severity issues, and header hardening gaps

Compliance watch

GDPR / NIS2 posture changes with governance evidence snapshots

Infrastructure surface

Unexpected open services, SSL expiry, DNS & email authentication changes

Content & tracker intelligence

Marketing tech shifts, analytics drift, and AI recommendation updates

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Security Headers

8 findings

15/100

GDPR Compliance

3 findings

68/100

NIS2 Compliance

8 findings

17/100

Email Security

5 findings

70/100

🧠AI Business Intelligence

Technology stack, business insights, and market analysis powered by AI.

Business Intelligence

Market & Strategic Analysis

Crossref operates as an essential non-profit entity within the education and scholarly publishing sectors, offering critical services such as content registration, grant linking, metadata retrieval, and reference linking. Its business model centers on membership fees and service provision to academic publishers, research funders, and libraries. The organization maintains a strong market position as a leading metadata infrastructure provider, supported by a large and diverse global membership. The website's integration with partner sites and community forums highlights an active ecosystem and collaborative approach. While direct revenue streams are not detailed, the extensive API usage and service portfolio suggest sustainable operational funding. The absence of direct contact emails or phone numbers on the site indicates a preference for controlled communication channels, likely to maintain service quality and security.

Security Posture Analysis

Comprehensive Security Assessment

The website employs HTTPS with an excellent SSL configuration, uses secure and updated external libraries, and avoids exposing sensitive data in its HTML content. However, the lack of security headers such as Content-Security-Policy and absence of a published security policy or vulnerability disclosure page represent gaps in transparency and defense-in-depth. No incident response contacts or security-specific communication channels are provided, which could hinder timely reporting and mitigation of security issues. Despite these gaps, no vulnerabilities or suspicious activities were detected, and the use of Matomo analytics with privacy considerations indicates a responsible approach to user data. Enhancing security documentation and implementing recommended headers would strengthen the overall security posture.

Strategic Recommendations

Priority Actions for Security Improvement

1

Publish a dedicated security policy and vulnerability disclosure page to improve transparency and user trust.

Observations

AI-powered comprehensive website and business analysis.

AI-Enhanced Website Analysis

Business Insights

Company:

Crossref

Description:

Crossref runs open infrastructure to link research objects, entities, and actions, creating a lasting and reusable scholarly record that underpins open science. Together with our 23,000 members in 163 countries, we drive metadata exchange and support nearly 2 billion monthly API queries, facilitating global research communication, for the benefit of society.

Key Services:
Content RegistrationGrant Linking System (GLS)Metadata RetrievalOpen Funder Registry (OFR)Reference LinkingSimilarity CheckCited-byMetadata PlusEvent DataCrossmark
Content Quality:

excellent

Branding:

consistent

Technical Stack

Technologies:
Hugo static site generatorjQueryBootstrapFontAwesomeAlgolia searchMatomo analyticsUsersnap feedback widgetDataTablesMasonry layoutMathJax
Frameworks:
Bootstrap
Performance:

moderate

Mobile:

good

Accessibility:

good

SEO:

good

Security Assessment

Security Score:
85/100
Best Practices:
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of secure external libraries

Analytics & Tracking

Services:
Matomo
Tracking Level:moderate
Privacy Compliance:good

Advertising & Marketing

Tracking Pixels:
Matomo
Marketing Tools:
ActOn
Transparency Level:basic

Website Quality Assessment

Design Quality:excellent
User Experience:excellent
Content Relevance:excellent
Navigation Clarity:excellent
Professionalism:excellent
Trustworthiness:high

Key Observations

1

Website is fully accessible with rich content and professional design

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🛡️Security Headers

HTTP security headers analysis and recommendations.

Security Headers

HTTP security headers analysis

15/100
Score

Missing Strict-Transport-Security header

HIGH

Forces HTTPS connections

Missing X-Frame-Options header

HIGH

Prevents clickjacking attacks

Missing X-Content-Type-Options header

MEDIUM

Prevents MIME type sniffing

Missing Content-Security-Policy header

HIGH

Controls resources the browser is allowed to load

Missing X-XSS-Protection header

MEDIUM

Legacy XSS protection (deprecated but still recommended)

Missing Referrer-Policy header

LOW

Controls referrer information sent with requests

Missing Permissions-Policy header

MEDIUM

Controls browser features and APIs

Sensitive data may be cached

LOW

Cache-Control header should include "no-store" for sensitive pages

👤GDPR Compliance

Privacy and data protection assessment under GDPR regulations.

GDPR Compliance

Privacy and data protection assessment

68/100
Score

No Cookie Policy found

HIGH

GDPR requires clear information about cookie usage

No Data Protection Officer mentioned

LOW

Large organizations may need to designate a DPO under GDPR

Privacy policy may not be GDPR compliant

MEDIUM

Privacy policy lacks explicit GDPR compliance elements

GDPR Compliance Analysis

Privacy Policy85% confidence
Cookie Policy0% confidence
Contact Information Found90% confidence
phone

🛡️NIS2 Compliance

Network & Information Security Directive compliance assessment.

NIS2 Compliance

Network & Information Security Directive

17/100
Score

No information security framework found

HIGH

NIS2 requires documented cybersecurity and information security measures

No vulnerability disclosure policy

MEDIUM

NIS2 encourages coordinated vulnerability disclosure

No security policy documentation found

HIGH

NIS2 requires documented cybersecurity governance and risk management

No incident response procedures found

HIGH

NIS2 requires documented incident response and business continuity plans

No business continuity planning found

MEDIUM

NIS2 emphasizes operational resilience and business continuity

No security contact information

HIGH

NIS2 requires clear incident reporting channels

No vulnerability reporting mechanism

MEDIUM

Clear vulnerability reporting supports coordinated disclosure

No NIS2 reference found

LOW

Consider explicitly mentioning NIS2 compliance efforts

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📧Email Security

SPF, DKIM, and DMARC validation and email security assessment.

Email Security

SPF, DKIM, and DMARC validation

70/100
Score

Complex SPF record

LOW

Too many include statements can cause lookup limits

DMARC not enforcing

MEDIUM

DMARC policy is set to "none"

No BIMI Record

LOW

BIMI displays brand logos in email clients

No MTA-STS Policy

MEDIUM

MTA-STS enforces TLS for email delivery

No TLS-RPT Record

LOW

TLS-RPT provides reporting for email TLS issues

SPF
Sender Policy Framework
DKIM
DomainKeys Identified Mail
DMARC
Domain-based Message Authentication
MX Records
Mail Exchange Records
BIMI
Brand Indicators
MTA-STS
Mail Transfer Agent Security
TLS-RPT
TLS Reporting
DNSSEC
DNS Security
SPF Details
Record:
v=spf1 ip4:208.254.38.64/27 ip4:108.26.163.24 ip4:18.233.120.246 include:mail.zendesk.com include:stspg-customer.com include:_spf.google.com include:_spf.intacct.com include:amazonses.com include:_spf.act-on.net ~all
DNS Lookups:6/10
Policy:~all
DKIM Selectors Found
Selector:google(1296-bit rsa)
DMARC Details
Policy:none
Subdomain Policy:none
Aggregate Reports:dmarc@crossref.org
Forensic Reports:dmarc@crossref.org

🏆SSL/TLS Security

Certificate validity and encryption analysis.

SSL/TLS Security

Certificate validity and encryption analysis

77/100
Score

Weak Protocols Supported

HIGH

Server supports weak protocols: TLSv1.1

OCSP Stapling Not Enabled

LOW

OCSP stapling improves performance and privacy

Certificate Transparency Not Implemented

LOW

Certificate is not logged in Certificate Transparency logs

Partial SSL/TLS Assessment

LOW

Completed 3 of 4 security checks due to time constraints

Protocol Support

TLSv1.3TLSv1.2TLSv1.1

OCSP Status

OCSP Stapling Disabled

📊DNS Health

DNS configuration and security assessment.

DNS Health

DNS configuration and security assessment

80/100
Score

DNSSEC Not Enabled

MEDIUM

DNSSEC is not configured for this domain

Domain Delete Lock Not Enabled

LOW

Domain can be deleted without additional verification

DMARC Policy Set to None

LOW

DMARC is configured but not enforcing any policy

Domain Registration Details

Domain Age
25 years(mature)
Expiry Risk
medium(expired)
Protection Level
basicDNSSEC OFF

DNS Records

A Records:52.1.48.89, 3.229.144.191, 52.205.71.51, 54.163.65.105
Name Servers:
ns-1052.awsdns-03.org
ns-1629.awsdns-11.co.uk
ns-473.awsdns-59.com
ns-659.awsdns-18.net
MX Records:
10: aspmx.l.google.com
10: aspmx3.googlemail.com
30: aspmx2.googlemail.com
20: alt2.aspmx.l.google.com
20: alt1.aspmx.l.google.com
SOA:Serial: 1, TTL: 86400s

DNSSEC Status

DNSSEC Not Enabled

DNS Performance

Resolution Time:42ms

SPF Analysis

SPF Record:
v=spf1 ip4:208.254.38.64/27 ip4:108.26.163.24 ip4:18.233.120.246 include:mail.zendesk.com include:stspg-customer.com include:_spf.google.com include:_spf.intacct.com include:amazonses.com include:_spf.act-on.net ~all

Network Security

Port scanning and network exposure analysis.

Network Security

Port scanning and network exposure analysis

100/100
Score

Good Network Security Posture

LOW

No unnecessary services detected on common risky ports

How does crossref.org compare?

See how crossref.org stacks up against similar websites in the same industry.

🔧Technical Analysis

Detailed technical findings and analysis from AI assessment.

Technical Analysis

Comprehensive security assessment findings

Additional Findings

The website is built using the Hugo static site generator, ensuring fast and reliable content delivery. It incorporates Bootstrap for responsive design, jQuery for DOM manipulation, and Algolia for advanced search capabilities, reflecting a modern and user-friendly technical stack. Analytics are handled via Matomo, an open-source platform that respects privacy. The site also integrates user feedback tools like Usersnap and uses DataTables and Masonry for dynamic content presentation. Performance is moderate with good mobile optimization and accessibility features. No CMS vulnerabilities or outdated libraries were detected. Opportunities exist to improve technical SEO and implement additional security headers to further enhance robustness.
Professional PDF & Marketing Data

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PDF Report & Export

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Marketing Intelligence

Contact emails, phone numbers & warm leads

49.90 €one-time • Incl. 21% VAT

Plan Comparison

FeaturePDF ReportMarketing+
Full security analysis
Professional PDF export
Email delivery
Lifetime access + unlock code
Contact emails & phones
Marketing outreach data

Already purchased?

Order summary

Domaincrossref.org
Access tierFull report or marketing add-on

Digital reports are delivered immediately after payment. By continuing you acknowledge the withdrawal waiver described in our Returns & Refunds policy.

VisaMastercardApple PayGoogle Pay

Secure payments processed via EveryPay. Prices in EUR; Incl. 21% VAT.

SEQ SIA

Lastadijas 12 k-3, Riga, Latvia, LV-1050

Reg. No. 40203410806 • VAT LV40203410806

Support: guard@offseq.com+371 2256 5353

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