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Security report for tidycal.com

Sumo Group, Inc. · Technology · N/a

Medium risk. 5 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

72/100

Risk levelMedium

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

TidyCal is a SaaS business offering a simple and affordable calendar management and booking solution, targeting individuals and small businesses seeking an alternative to more expensive scheduling tools. The company leverages a lifetime deal pricing model through AppSumo, positioning itself as a cost-effective and user-friendly option. The website is professionally designed with clear navigation, mobile optimization, and strong trust signals including ProductHunt awards and AppSumo partnership. Technically, the site uses modern tracking and marketing technologies such as Google Analytics, Facebook Pixel, and Chatbase chatbot, hosted on Amazon AWS infrastructure, ensuring good performance and reliability. Security posture is solid with HTTPS enforcement and domain registration protections, though improvements like DNSSEC and published security policies are recommended. Privacy compliance is basic, with a privacy policy present but lacking a cookie consent mechanism. Overall, the site is trustworthy and well-positioned in its niche, with room for enhanced compliance and security transparency.

Scanned

NIS2 and GDPR posture

GDPR outside view
53/ 100 · Medium
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

5 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 Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…
  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

  3. 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.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

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

Keep watching tidycal.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

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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
35
Email security
80
DNS health
85
Network security
100
GDPR outside view
53
Average
72

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention tidycal.com, from OffSeq Breach.

Total records
989
Employees
0
Customers
989
Third parties
0
Weak passwords
6%

1 subdomain affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for tidycal.com.

Select it in the checkout above.

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

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

Business context

Business profile

TidyCal operates in the technology sector, specifically in scheduling and calendar management software. Its business model includes a free tier and a one-time lifetime deal priced at $29, marketed primarily through AppSumo. The target audience includes freelancers, consultants, and small businesses needing simple scheduling tools. The company benefits from strong market positioning as a cost-effective alternative to competitors like Calendly. The partnership with AppSumo and recognition on ProductHunt enhance credibility and user acquisition. The business appears small but focused, with a clear value proposition and growth potential in the SaaS scheduling market.

Security posture

The website demonstrates a mature security posture with HTTPS enabled, CSRF tokens in forms, and domain registration protections such as clientDeleteProhibited status. However, the absence of DNSSEC and lack of published security or incident response policies represent gaps. No vulnerabilities or exposed sensitive data were detected in the analysis. Privacy compliance is partial, with a privacy policy present but no cookie consent mechanism, which may pose GDPR compliance risks. The site uses third-party tracking scripts, which should be managed carefully to maintain user privacy. Overall, security is good but could be improved with enhanced transparency and DNS security.

Recommendations

  1. Enable DNSSEC on the domain to strengthen DNS security and prevent spoofing.
  2. Implement and display a comprehensive cookie policy with user consent mechanisms to improve privacy compliance.
  3. Publish a dedicated security policy and incident response contact information to enhance transparency and trust.
  4. Consider adding a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  5. Review third-party tracking scripts and ensure compliance with GDPR and other privacy regulations.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Sumo Group, Inc.
Description
The simplest way to manage your calendar and schedule. Simplify your bookings, auto-generate meeting URLs, and more. Trusted by 150,000+ people.
Key services
calendar management, appointment scheduling, booking solution, auto-generated meeting URLs
Content quality
good
Branding
consistent

Technology

Stack
Google Tag Manager, Google Analytics (gtag.js), Facebook Pixel, Chatbase chatbot, FullCalendar (CSS placeholder), Intl-Tel-Input (phone input styling), Bootstrap (CSS classes detected), Google Fonts (Figtree, Roboto)
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • CSRF token present in forms
  • ClientDeleteProhibited, clientTransferProhibited, clientUpdateProhibited domain statuses

Analytics and tracking

Services
Google Analytics, Google Tag Manager, Facebook Pixel
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
Facebook Ads
Tracking pixels
Facebook Pixel
Marketing tools
Chatbase chatbot
Transparency
good

Site quality

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

Key observations

  1. Website offers a simple calendar booking solution with a lifetime deal pricing model.
  2. Strong partnership and trust signals via AppSumo and ProductHunt recognitions.
  3. No direct company contact emails or phone numbers publicly listed; contact via forms only.
  4. No explicit cookie policy or consent mechanism detected, which is a compliance gap.
  5. Good technical implementation with modern tracking and marketing tools.
  6. Security posture is good but could be improved with DNSSEC and published security policies.
Technical notes

Notes

The website is built with modern web technologies including Bootstrap for responsive design, Google Fonts for typography, and integrates multiple analytics and marketing tools such as Google Analytics, Google Tag Manager, Facebook Pixel, and Chatbase chatbot. Hosting is on Amazon AWS, providing reliable infrastructure. The site loads quickly and is optimized for mobile devices, with good accessibility features. No CMS was detected, suggesting a custom or proprietary platform. The technical implementation is robust with proper meta tags for SEO and social sharing. Minor technical debt includes lack of DNSSEC and absence of some security headers, which can be addressed to further harden the site.
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. 72/100 +14Medium30 findingsView report
  2. 58/100Medium24 findingsView report
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