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Security report for yumpu.com

YUMPU.com · Media · Switzerland

Partial score · DNS & email only

59/100

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

YUMPU.com is a well-established digital publishing platform specializing in converting PDFs into interactive flipbooks and digital magazines. The platform targets publishers and readers worldwide, offering multiple subscription plans ranging from free to enterprise-level services. It provides key services such as SEO backlinking, custom branding, multimedia integration, and app/web kiosks, positioning itself strongly in the media industry with a large user base and international reach. Technically, the website employs modern web technologies including Apache server, Bootstrap framework, jQuery, FontAwesome, and Swiper.js for UI components, hosted on Amazon CloudFront CDN. The site is mobile-optimized and SEO-friendly with structured data and meta tags. However, the security posture is weakened by an invalid or missing SSL certificate and lack of modern TLS protocols, which poses risks to user data confidentiality and trust. Privacy compliance is robust with clear privacy and cookie policies and a consent management platform in place. Overall, the website is professional and trustworthy but requires urgent SSL/TLS remediation to enhance security and user confidence.

Scanned

This is an earlier scan of yumpu.com. View the latest report

NIS2 and GDPR posture

Checks completed
5of 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

1 finding rated critical or high. Fix these first.

  1. 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.

    • Critical

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

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

Keep watching yumpu.com

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  • 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
0
Email security
50
DNS health
85
Network security
100
Average
59

Not counted

  • Security headers: did not complete in this scan.
  • GDPR outside view: did not complete in this scan.
  • 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

Technical appendix

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

Business context

Business profile

YUMPU operates in the digital media sector, providing a platform for digital magazine publishing and distribution. Its business model includes free and paid subscription tiers, catering to a broad audience from casual users to enterprise clients. The platform's competitive advantage lies in its SEO-friendly flipbook technology, multimedia capabilities, and extensive language support. The presence of customer logos and testimonials indicates strong market acceptance. The company maintains a transparent online presence with comprehensive legal and privacy documentation. Partnerships with technology providers and use of advanced marketing tools like Google Tag Manager and Usercentrics CMP support its growth and user engagement strategies.

Security posture

The website demonstrates partial adherence to security best practices with several HTTP security headers implemented, including HSTS, X-Content-Type-Options, Content Security Policy, and X-Frame-Options. Cookies are set with Secure and HttpOnly flags, enhancing session security. However, the absence of a valid SSL certificate and disabled TLS protocols critically undermine the security posture, exposing users to potential interception and data compromise. The lack of OCSP stapling and session resumption further reduces security and performance. No explicit incident response or vulnerability disclosure policies are found, indicating room for improvement in security governance and transparency. Overall, the security maturity is low to moderate, requiring immediate attention to SSL/TLS configuration.

Recommendations

  1. Obtain and correctly install a valid SSL/TLS certificate to enable HTTPS and protect user data.
  2. Enable modern TLS protocols (TLS 1.2 and TLS 1.3) and disable deprecated versions to enhance security.
  3. Implement OCSP stapling and session resumption to improve certificate validation and connection performance.
  4. Publish a clear security policy and vulnerability disclosure program to improve transparency and trust.
  5. Enhance accessibility features and conduct regular security audits to maintain compliance and security posture.
Technical notes

Notes

The website is built on a solid technical foundation using Apache web server and modern front-end frameworks like Bootstrap 5.2 and jQuery 3.3.1. It leverages Swiper.js for interactive sliders and FontAwesome for icons. Hosting is via Amazon CloudFront CDN, ensuring global content delivery and scalability. The site includes structured data (JSON-LD) for SEO and uses Usercentrics for consent management, reflecting good digital maturity. However, performance metrics are unavailable, and SSL/TLS misconfiguration is a significant technical risk. The site is mobile responsive and SEO optimized with proper meta tags and Open Graph data. There is no detected CMS, suggesting a custom or proprietary platform. Overall, the technical infrastructure is modern but requires SSL/TLS fixes to avoid operational risks.
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

Earlier scans of this domain

  1. 89/100 +3Low20 findingsView report
  2. 86/100Low22 findingsView report
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