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Security report for addevent.com

AddEvent · Technology · N/a

Medium risk. 7 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

69/100

Risk levelMedium

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

AddEvent is a technology company specializing in calendar event sharing and marketing tools designed to increase attendance and engagement for businesses and organizations. Their platform offers a variety of solutions including Add to Calendar buttons, online RSVP forms, subscription calendars, embeddable calendars, and automated event management. Trusted by over 350,000 companies, AddEvent positions itself as a market leader in the Add to Calendar service space. The website is professionally designed, mobile-optimized, and integrates with major calendar platforms and payment processors such as Stripe. The technical infrastructure includes modern JavaScript libraries and analytics tools like Amplitude, indicating a mature digital presence. Security posture is generally good with HTTPS enforced and no exposed sensitive data, though some security headers could be improved. Privacy and cookie policies are comprehensive and GDPR compliant, but direct contact information and explicit security policies are not readily found on the site. WHOIS data for the domain is unavailable, which is unusual and warrants further investigation to confirm domain legitimacy. Overall, the website is trustworthy and professional, with moderate risk due to missing WHOIS transparency.

Scanned

NIS2 and GDPR posture

GDPR outside view
35/ 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

7 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
    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

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

  2. GDPR outside view

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

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • 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

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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
77
Security headers
30
Email security
85
DNS health
85
Network security
100
GDPR outside view
35
Average
69

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

AddEvent operates a SaaS business model targeting businesses and organizations that require efficient event sharing and calendar engagement solutions. Their competitive advantage lies in their comprehensive suite of calendar marketing tools and a large user base. Revenue streams likely include subscription plans and payment processing fees. The company leverages partnerships with Stripe for payments and FirstPromoter for affiliate marketing, indicating a well-integrated ecosystem. The target customer segments include event organizers, marketers, and enterprises seeking to reduce no-shows and increase event attendance. Growth indicators include a broad solution portfolio and extensive integrations. Strategic observations suggest a focus on expanding automated event capabilities and analytics offerings to deepen market penetration.

Security posture

The security maturity of AddEvent's website is moderate to good. HTTPS is enforced, and no sensitive data is exposed in the HTML content. However, the absence of several key security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options represents a potential area for improvement to mitigate risks like clickjacking and MIME sniffing. No explicit incident response or vulnerability disclosure policies are found, which could impact transparency and trust. Privacy policies are comprehensive and GDPR compliant, reflecting good data protection practices. The use of third-party scripts and integrations necessitates ongoing security audits to prevent vulnerabilities. Overall, the security posture supports business operations but would benefit from enhanced header configurations and published security policies.

Recommendations

  1. Implement and enforce Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options headers to strengthen security.
  2. Publish explicit incident response and vulnerability disclosure policies to improve transparency and trust.
  3. Verify and update WHOIS domain registration information to ensure domain legitimacy and reduce suspicion.
  4. Add clear and accessible company contact information including support and security contacts.
  5. Regularly audit third-party scripts and dependencies to mitigate potential vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
AddEvent
Description
Easily increase attendance and engagement by letting users add events to their calendars, embed calendars on your website, collect RSVPs, send reminders, and offer calendar subscriptions. Works with Google, Apple, Outlook, and more.
Key services
Add to Calendar buttons and links, Online RSVP forms, Subscription calendars, Embeddable calendars, Automated events, Event landing pages, Analytics and integrations
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, CSS3, HTML5, Google Fonts, Slick Carousel, AddEvent proprietary JS libraries, Stripe (payment processing), Amplitude (analytics), FirstPromoter (affiliate tracking)
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
75/100
Good practices seen
  • Use of HTTPS
  • No exposed sensitive data in HTML
  • Use of secure payment API keys (Stripe public key only visible)

Analytics and tracking

Services
Amplitude
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Amplitude, FirstPromoter
Marketing tools
AddEvent proprietary marketing tools
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with rich content and professional design
  2. No WHOIS data available, which is unusual for a .com domain
  3. Strong focus on calendar event sharing and marketing tools
  4. Use of modern JavaScript libraries and integrations with Stripe and analytics
  5. Privacy and cookie policies are present and comprehensive
  6. No direct contact emails or phone numbers found on main page
  7. No explicit security or incident response policies found on site
  8. No vulnerability disclosure or security.txt file detected
  9. No adult or questionable content detected
Technical notes

Notes

The website employs a modern technology stack including JavaScript, CSS3, and HTML5, with integrations of third-party libraries such as Slick Carousel for UI components and analytics tools like Amplitude. Payment processing is handled via Stripe, indicating secure and scalable transaction management. The site is mobile-optimized with responsive design and good accessibility features. Performance is moderate, with asynchronous loading of scripts and use of CDN-hosted assets. There is no detected CMS, suggesting a custom or proprietary platform. Technical risks include missing security headers and reliance on multiple external scripts, which require vigilant maintenance to avoid security or performance degradation.
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. 68/100 −1Medium31 findingsView report
  2. 69/100 +3Medium30 findingsView report
  3. 66/100Medium31 findingsView report
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