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Security report for lfeeder.com

Leadfeeder · Technology · Finland

Medium risk. 3 critical or high findings in Security headers and GDPR outside view.

Security score

70/100

Risk levelMedium

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

Leadfeeder is a Helsinki-based technology company founded in 2013, specializing in B2B lead generation software. The company offers a SaaS platform that identifies companies visiting client websites, qualifies leads based on behavior and firmographics, and integrates with major CRM and marketing tools. With over 80,000 users and a strong market presence, Leadfeeder positions itself as a cost-effective, mature solution in the lead generation space. The website content is professionally designed, well-structured, and targets sales and marketing teams seeking to improve lead quality and conversion rates. Technically, the site employs advanced analytics and A/B testing tools such as Visual Website Optimizer, Dreamdata, and Google Tag Manager, hosted on AWS infrastructure. However, performance is impacted by a large page size and numerous resources, resulting in slow load times. Security posture is currently weak due to the absence of a valid SSL certificate and missing security headers, which poses risks to data integrity and user trust. Privacy compliance is strong, with clear GDPR adherence and a comprehensive cookie consent mechanism. Overall, Leadfeeder demonstrates a solid business and technical foundation but should prioritize security improvements to enhance trust and compliance.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
43/ 100 · High
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

3 findings rated critical or high. Fix these first.

  1. 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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

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

Keep watching lfeeder.com

This scan found 15 issues across 5 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
100
Security headers
45
Email security
50
DNS health
80
Network security
100
GDPR outside view
43
Average
70

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

Technical appendix

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

Business context

Business profile

Leadfeeder operates in the technology sector, focusing on B2B lead generation and sales enablement. Its business model is subscription-based SaaS, offering both free and paid plans tailored to company size and website traffic. The company leverages a proprietary IP-to-company database updated daily via machine learning, enabling identification of companies even with remote employees. Leadfeeder's competitive advantage lies in its mature feature set, extensive integrations (e.g., HubSpot, Salesforce, Pipedrive), and strong data quality practices. The target market includes salespeople, marketers, and agencies seeking to convert anonymous website traffic into actionable leads. The company maintains a robust partnership ecosystem, including dealfront.com, and emphasizes GDPR compliance and data privacy. Growth indicators include a large user base and continuous product enhancements. Strategic observations suggest Leadfeeder is well-positioned to expand its market share by addressing security gaps and enhancing performance.

Security posture

The current security maturity level of Leadfeeder's website is moderate to low. Key vulnerabilities include an invalid SSL certificate, lack of support for modern TLS protocols, absence of HTTP security headers (e.g., HSTS, Content-Security-Policy), and no DMARC record for email protection. These issues expose the site to potential man-in-the-middle attacks, downgrade attacks, and email spoofing. The site does not implement session resumption or OCSP stapling, which could affect secure session management. Despite these gaps, there are no detected critical vulnerabilities such as Heartbleed or POODLE. The company demonstrates awareness of GDPR compliance and data protection but lacks publicly visible incident response policies or security certifications. The absence of a security policy and incident response contact channels indicates limited readiness for security incidents. Overall, while the business maintains good privacy practices, it should urgently address foundational security controls to mitigate risks and enhance trust.

Recommendations

  1. Obtain and deploy a valid SSL/TLS certificate supporting TLS 1.2 and TLS 1.3 protocols to secure all website traffic.
  2. Implement HTTP security headers including HSTS with includeSubDomains and preload directives, Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Publish a comprehensive security policy and incident response plan on the website, including dedicated contact channels such as security@ or abuse@ emails.
  4. Add and configure DMARC, SPF, and DKIM DNS records to protect against email spoofing and improve email deliverability.
  5. Optimize website performance by reducing page size and resource count, and improve mobile accessibility and SEO features.

Contact details published on the site

Addresses
Legal name
Leadfeeder
Technical notes

Notes

The website is built using modern JavaScript technologies and integrates multiple third-party analytics and marketing tools such as Visual Website Optimizer, Google Tag Manager, Dreamdata, and CookieHub for consent management. It is hosted on Amazon AWS infrastructure, as indicated by DNS and nameserver records. The site employs advanced A/B testing and personalization frameworks, with extensive use of cookies and tracking pixels for user behavior analysis. However, the page size is large (~1.5MB) with 151 resources, resulting in slow load times (~18.9 seconds). Mobile optimization is good, but accessibility features are basic. SEO is supported by proper meta tags, Open Graph, and structured data (JSON-LD). The site lacks a valid SSL certificate and modern TLS support, which is a critical technical deficiency. Overall, the technical stack is mature but requires security and performance enhancements.
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. 83/100Low22 findingsView report
  2. 83/100 +15Low22 findingsView report
  3. 68/100 −3Medium29 findingsView report
  4. 71/100Medium26 findingsView report
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