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Security report for oncehub.com

OnceHub · Technology · N/a

Low risk. 2 critical or high findings in SSL/TLS.

Security score

85/100

Risk levelLow

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

OnceHub is a technology company specializing in online appointment booking software designed to streamline scheduling for businesses and professionals. The platform offers branded booking pages, AI-driven scheduling, team routing, and extensive integrations with productivity and communication tools. Positioned as a competitive SaaS provider, OnceHub targets a broad business audience seeking efficient scheduling solutions. The website is built on HubSpot CMS, leveraging modern web technologies and integrating marketing and analytics tools such as Google Analytics, HubSpot tracking, and CookieYes for consent management. Security posture is strong with HTTPS enforcement, CSRF protection, and cookie consent mechanisms, although explicit incident response and vulnerability disclosure policies are not publicly detailed. Overall, the site is professional, well-structured, and compliant with GDPR, providing a trustworthy user experience.

Scanned

NIS2 and GDPR posture

GDPR outside view
95/ 100 · Low
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

2 findings 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.

    • 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
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching oncehub.com

This scan found 14 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
57
Security headers
80
Email security
93
DNS health
85
Network security
100
GDPR outside view
95
Average
85

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

OnceHub operates in the technology sector with a SaaS business model focused on scheduling and appointment management. Its market position is supported by a comprehensive feature set including AI scheduling and multi-location support, appealing to remote and hybrid teams. The company leverages partnerships and integrations with major platforms like Google Workspace, Microsoft 365, Salesforce, and Zapier, enhancing its ecosystem. Customer trust is reinforced through positive Capterra reviews and transparent privacy practices. The absence of WHOIS data for the www subdomain suggests privacy protection or querying issues but does not detract from the company's credibility. Growth indicators include a broad user base and continuous feature enhancements.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, use of security headers, and robust cookie consent management. Cookies for CSRF protection and bot detection are implemented, and Cloudflare services likely provide additional security layers. However, the lack of publicly available incident response and vulnerability disclosure information indicates room for improvement in transparency and readiness. No vulnerabilities or exposed sensitive data were detected in the analysis. Compliance with GDPR is evident through detailed privacy and cookie policies. Overall, the security culture appears proactive but could benefit from enhanced communication on security governance.

Recommendations

  1. Publish a dedicated vulnerability disclosure policy and security.txt file to improve transparency and encourage responsible reporting.
  2. Provide clear incident response contact information, including security@ or abuse@ email addresses.
  3. Disclose any security certifications or compliance frameworks adhered to, such as ISO 27001 or SOC 2.
  4. Enhance contact information availability by including verified company emails and phone numbers for support and sales.
  5. Regularly audit and update third-party integrations and tracking scripts to minimize potential security risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
OnceHub
Description
OnceHub provides online appointment booking software enabling businesses to create branded scheduling experiences, manage meetings, and automate scheduling workflows.
Key services
Online appointment booking, Phone booking, Team scheduling and routing, AI-driven scheduling, Platform integrations
Content quality
excellent
Branding
consistent

Technology

Stack
HubSpot CMS, Google Fonts, jQuery, Google Tag Manager, CookieYes Consent Management, Cloudflare (infrastructure inferred from cookies)
Platforms
HubSpot
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with detailed categories
  • CSRF protection cookies
  • Use of Cloudflare services

Analytics and tracking

Services
Google Analytics, HubSpot Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
AdRoll, DoubleClick
Tracking pixels
HubSpot
Marketing tools
HubSpot, CookieYes
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 rich content and no blocking detected
  2. Uses HubSpot CMS and integrates multiple marketing and analytics tools
  3. Strong cookie consent and privacy compliance mechanisms in place
  4. No direct company contact emails or phone numbers found in HTML; contact via forms
  5. WHOIS data unavailable for www.oncehub.com, possibly due to querying subdomain or privacy protection
  6. Website content is business-focused, professional, and safe for general audiences
Technical notes

Notes

The website is built on HubSpot CMS, utilizing modern web standards and technologies including jQuery, Google Fonts, and Google Tag Manager. Performance is moderate with good mobile optimization and accessibility features. The site employs a comprehensive cookie consent mechanism via CookieYes, supporting GDPR compliance. Hosting and security infrastructure likely involve Cloudflare, providing CDN and security services. Technical debt appears low with no broken elements detected. Opportunities exist to improve technical SEO and accessibility further, and to document security and privacy practices more explicitly for enhanced user trust.
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. 82/100Low19 findingsView report
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