Skip to main content

Security report for addthisevent.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, automated event management, and analytics. Trusted by over 350,000 companies, AddEvent holds a strong market position as a leading Add to Calendar service provider. The website is professionally designed, mobile-optimized, and provides comprehensive documentation and support resources.

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

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

Keep watching addthisevent.com

This scan found 21 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

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

Billed monthly to your card. Cancel anytime. See sample alerts.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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 that require efficient event sharing and calendar integration solutions. Their revenue streams likely include subscription plans and premium features. The company leverages partnerships with Stripe for payment processing and FirstPromoter for affiliate marketing. Their target customers span multiple sectors needing calendar engagement tools. The website content and branding are consistent and convey professionalism, supporting a medium-sized technology company profile.

Security posture

The website enforces HTTPS with strong SSL configuration and includes standard security headers, indicating good baseline security practices. However, there is no publicly available security policy or incident response information, and no vulnerability disclosure program is evident. No exposed sensitive data or vulnerable libraries were detected in the HTML content. The absence of WHOIS registration data is a concern for domain legitimacy and trust. Overall, the security posture is good but could be improved by publishing explicit security policies and contact channels.

Recommendations

  1. Publish a dedicated security policy and incident response page to improve transparency and trust.
  2. Implement and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  3. Provide direct security contact emails such as security@addevent.com or abuse@addevent.com.
  4. Regularly audit and update third-party libraries to mitigate potential vulnerabilities.
  5. Clarify domain registration details or ensure WHOIS data is publicly available to enhance legitimacy.
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, Online RSVP forms, Subscription calendars, Embeddable calendars, Automated events, Analytics
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, CSS3, HTML5, Google Fonts, Slick Carousel, Stripe API, Amplitude Analytics, FirstPromoter, AddEvent proprietary libraries
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of secure external libraries
  • No inline sensitive keys exposed

Analytics and tracking

Services
Amplitude
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Amplitude
Marketing tools
Stripe, Amplitude, FirstPromoter
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenge
  2. Professional and comprehensive content focused on calendar event sharing services
  3. No direct company contact emails or phone numbers found in HTML content
  4. Strong use of modern web technologies and third-party integrations
  5. No explicit security or incident response policies published
  6. WHOIS data unavailable or domain not found in public WHOIS database
  7. Good privacy and cookie policies with consent mechanisms present
  8. No adult or questionable content detected
Technical notes

Notes

The website uses a modern technology stack including JavaScript, CSS3, HTML5, and integrates third-party services such as Stripe for payments, Amplitude for analytics, and FirstPromoter for affiliate marketing. It employs Google Fonts and Slick Carousel for UI enhancements. The site is well-optimized for mobile devices and demonstrates fast loading times. No CMS or hosting provider details were explicitly detected. The technical implementation is robust with good SEO and accessibility considerations, supporting a high-quality user experience.
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

Reviews of this site

Share your experience with addthisevent.com. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review addthisevent.com.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.