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Security report for viaf.org

OCLC Online Computer Library Center, Inc. · Education · United States

Medium risk. 6 critical or high findings in Email security, Security headers and 1 other check.

Security score

65/100

Risk levelMedium

0–100, higher is better. How it is calculated

The VIAF website is operated by OCLC Online Computer Library Center, Inc., a reputable organization specializing in library cooperative services. VIAF aggregates multiple name authority files into a single, OCLC-hosted service, providing valuable bibliographic and authority data to libraries and researchers worldwide. The website serves a specialized audience in the education and library sectors, offering search and data linking services for authority records. Technically, the site is built using modern web technologies including React and Next.js, hosted with Cloudflare DNS, and demonstrates good performance and mobile optimization. Security posture is strong with HTTPS enforced, security headers present, and domain registration consistent with the organization's identity. Privacy compliance is evident through a comprehensive privacy policy and cookie consent mechanism. However, explicit contact information, terms of service, and vulnerability disclosure mechanisms are not prominently available. Overall, the site is professional, trustworthy, and well-maintained, supporting its role as a key resource in the library information ecosystem.

Scanned

NIS2 and GDPR posture

GDPR outside view
88/ 100 · Low
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

6 findings rated critical or high. Fix these first.

  1. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

    • High

      No SPF record found

      SPF helps prevent email spoofing

      What to do: Add SPF record: "v=spf1 include:_spf.yourmailprovider.com ~all"

  2. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

  3. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

Need hands-on remediation? Email guard@offseq.com

Keep watching viaf.org

This scan found 23 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

Daily monitoring

Recommended

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

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Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
57
Security headers
35
Email security
40
DNS health
70
Network security
100
GDPR outside view
88
Average
65

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention viaf.org, from OffSeq Breach.

No leaked records found

Breach holds no records for viaf.org right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

VIAF holds a strong market position as a global authority file aggregator hosted by OCLC, serving libraries and bibliographic professionals. Its business model is non-profit and service-oriented, focusing on data aggregation and accessibility. The website reflects a mature digital presence with a clear target audience and well-defined services. Partnerships with numerous national libraries and institutions are evident from the contributors list. The absence of direct contact details suggests a focus on institutional users rather than direct consumer engagement. The site’s longevity and domain age support its credibility and stability in the market.

Security posture

The website exhibits a mature security posture with HTTPS enforced and multiple security headers implemented. The domain status clientTransferProhibited adds protection against unauthorized transfers. No DNSSEC is enabled, which is a minor gap. The presence of cookie consent mechanisms aligns with privacy regulations. No explicit security policy or incident response information is found, which could be improved. No vulnerabilities or exposed sensitive data were detected in the analysis. Overall, the security measures are appropriate for the site's function and audience.

Recommendations

  1. Enable DNSSEC to enhance domain name system security.
  2. Publish a dedicated security policy and incident response page.
  3. Add a security.txt file to facilitate vulnerability disclosures.
  4. Consider providing explicit contact information for security and general inquiries.
  5. Maintain and regularly update privacy and cookie policies to ensure ongoing compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
OCLC Online Computer Library Center, Inc.
Description
The VIAF® (Virtual International Authority File) combines multiple name authority files into a single OCLC-hosted name authority service. The goal is to lower the cost and increase the utility of library authority files by matching and linking widely-used authority files and making that information available on the Web.
Key services
Name authority file aggregation, Bibliographic data linking, Searchable authority records
Content quality
good
Branding
consistent

Technology

Stack
React, Next.js, Cloudflare DNS
Frameworks
React, Next.js
Platforms
Web
Performance
fast
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • ClientTransferProhibited domain status
  • No DNSSEC but Cloudflare DNS used
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Transparency
basic

Site quality

Design
good
User experience
good
Content relevance
excellent
Navigation
good
Professionalism
good
Trustworthiness
high

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is focused on library authority data aggregation and search.
  3. Strong affiliation with OCLC, a reputable library cooperative.
  4. Good implementation of privacy and cookie consent mechanisms.
  5. Modern web technologies used with good performance and mobile optimization.
  6. No contact emails or phone numbers explicitly listed on the main page.
  7. No explicit terms of service page found.
  8. No security.txt or explicit vulnerability disclosure found.
Technical notes

Notes

The site uses a modern React and Next.js framework, indicating a contemporary and maintainable codebase. Hosting leverages Cloudflare DNS for reliability and performance. The site is mobile optimized and accessible, with good SEO practices evident from meta tags and structured data. Performance is fast with asynchronous script loading and preloading of key assets. No CMS is detected, suggesting a custom or proprietary content management approach. The technical infrastructure supports a professional and scalable web presence suitable for the target audience.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

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