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Security report for exclaimer.com

Exclaimer · Technology · United Kingdom

Partial score · DNS & email only

72/100

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

Exclaimer is a well-established technology company founded in 1999, specializing in cloud-based email signature management software for Microsoft 365 and Google Workspace users. The company holds a strong market position, trusted by over 100,000 companies worldwide, and offers a SaaS subscription model with multiple pricing tiers. Their platform is recognized for its award-winning capabilities and centralized management of secure, consistent email signatures. Technically, the website is built on modern frameworks such as Next.js and React, hosted with Cloudflare DNS services, and optimized for performance and mobile responsiveness. The site demonstrates good SEO practices, accessibility, and a professional design that aligns with their brand identity. Consent management is implemented via OneTrust, reflecting a mature approach to privacy compliance. From a security perspective, the website enforces HTTPS, employs multiple security headers, and restricts domain transfer and updates, indicating a strong security posture. However, DNSSEC is not enabled, which is a recommended enhancement. No vulnerabilities or exposed sensitive data were detected. Privacy policies and cookie consent mechanisms are comprehensive and GDPR compliant. Overall, Exclaimer's website reflects a high level of professionalism, security, and compliance, supporting its credibility and trustworthiness in the technology sector. Strategic recommendations include enabling DNSSEC, publishing a dedicated security policy and incident response contacts, and considering a vulnerability disclosure program to further enhance transparency and security readiness.

Scanned

NIS2 and GDPR posture

GDPR outside view
100/ 100 · Low
Checks completed
6of 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 exclaimer.com

This scan found 8 issues across 4 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

Email alerts on material changes and an exportable JSON history of every change.

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Full report

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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
77
DNS health
85
Network security
100
GDPR outside view
100
Average
72

Not counted

  • Security headers: 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

Exclaimer operates in the technology sector, focusing on email signature management solutions integrated with Microsoft 365 and Google Workspace platforms. Their business model is SaaS-based, targeting medium to large enterprises that require centralized control over email branding and compliance. The company benefits from a broad customer base exceeding 100,000 organizations, indicating strong market penetration and brand recognition. Their partnership ecosystem includes major cloud providers, and their digital presence is supported by active social media channels. The company’s longevity since 1999 and consistent domain registration details reinforce its stability and reliability in the market.

Security posture

The security maturity of Exclaimer's website is high, with enforced HTTPS, robust security headers, and domain status flags preventing unauthorized transfers or updates. The use of Cloudflare DNS adds resilience against DNS attacks, though the absence of DNSSEC is a minor gap. Privacy compliance is well addressed through detailed policies and consent management tools. No direct incident response or vulnerability disclosure information is published, which could be improved to enhance security transparency. Overall, the site demonstrates strong data protection practices and secure technical configurations, minimizing risk exposure.

Recommendations

  1. Enable DNSSEC on the domain to strengthen DNS security and prevent spoofing.
  2. Publish a formal security policy and incident response contact information on the website.
  3. Implement and publicize a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  4. Regularly review and update privacy and cookie policies to maintain compliance with evolving regulations.
  5. Enhance transparency by providing more detailed information about data retention and protection practices.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Exclaimer
Description
Exclaimer is a cloud-based email signature management platform for Microsoft 365 and Google Workspace, enabling centralized management of consistent, secure email signatures.
Key services
Email signature management, Microsoft 365 integration, Google Workspace integration
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Cloudflare DNS
Frameworks
Next.js
Platforms
Microsoft 365, Google Workspace
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Client transfer and update prohibited domain status
  • Use of Cloudflare DNS
  • Consent management via OneTrust

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
OneTrust
Marketing tools
OneTrust
Transparency
good

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high
Technical notes

Notes

The website leverages a modern technology stack including React and Next.js, ensuring fast load times and responsive design. Hosting and DNS are managed via Cloudflare, providing performance and security benefits. The site includes comprehensive meta tags and structured data (JSON-LD) for SEO and rich search results. Accessibility features are present, and the site is optimized for mobile devices. No deprecated or vulnerable libraries were detected in the scripts. Overall, the technical infrastructure supports a robust, scalable, and user-friendly web presence with minimal technical debt.
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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