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Security report for sleeknote.com

Sleeknote · Technology · Denmark

Medium risk. 6 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

65/100

Risk levelMedium

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

Sleeknote is a mature SaaS company founded in 2012, specializing in popup builder tools designed for marketers and online businesses to increase leads and sales through personalized and gamified popups. The company has a strong market presence with thousands of customers and extensive integrations, including a Shopify app. The website is professionally designed, mobile-optimized, and uses modern technologies such as WordPress, WP Rocket, and Weglot for translations. Multimedia content is embedded via Wistia, and tracking is managed through Google Tag Manager. Security posture is generally good with HTTPS and domain registration protections, though DNSSEC is not enabled and no explicit security or privacy policies are published on the site. Privacy compliance is basic, lacking visible cookie consent mechanisms and privacy policy links. Contact information is available via a contact page but no direct emails or phone numbers are exposed in the HTML. Overall, the website is trustworthy, professional, and safe for general audiences.

Scanned

This is an earlier scan of sleeknote.com. View the latest report

NIS2 and GDPR posture

GDPR outside view
80/ 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

6 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"

    • 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 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 sleeknote.com

This scan found 25 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.

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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
42
Security headers
15
Email security
70
DNS health
85
Network security
100
GDPR outside view
80
Average
65

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

Sleeknote operates in the technology sector, providing marketing SaaS solutions focused on popup creation and visitor engagement. Its business model targets marketers and e-commerce businesses seeking to optimize conversion rates through personalized popups and gamification. The company leverages a broad integration ecosystem with over 1,200 marketing tools and maintains a partnership with Shopify. The website content and branding are consistent and professional, supporting a medium-sized enterprise profile. The company emphasizes ease of use, advanced targeting, and analytics to differentiate itself in a competitive market. Growth indicators include a large customer base and continuous feature additions. The partnership ecosystem and integrations suggest a strategic approach to market expansion and customer retention.

Security posture

The website employs HTTPS with a valid SSL certificate and domain registration protections such as clientDeleteProhibited status. However, DNSSEC is not enabled, which could improve DNS security. No explicit security headers were detected in the provided data, and there is no published security policy or incident response information. The site uses third-party scripts including Google Tag Manager, Weglot, and Zendesk, which require ongoing monitoring for vulnerabilities. No exposed sensitive data or vulnerabilities were identified in the analysis. Privacy compliance is limited, with no visible cookie consent banners or detailed privacy policies, which may pose compliance risks under GDPR. Overall, the security posture is good but could be enhanced by implementing DNSSEC, security headers, and transparent privacy and security policies.

Recommendations

  1. Enable DNSSEC on the domain to enhance DNS security and prevent spoofing.
  2. Publish comprehensive privacy and cookie policies with explicit GDPR compliance and consent mechanisms.
  3. Implement security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  4. Create and publish a security policy and incident response plan accessible to users and partners.
  5. Regularly audit and update third-party scripts and integrations to mitigate vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Sleeknote
Description
Innovative. Different. Humble. These are some of the adjectives our 2,750+ customers use to describe Sleeknote. What will you say?
Key services
Popup builder, Email capture, Personalized popups, Gamification, Integrations with 1,200+ marketing tools
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, WP Rocket, jQuery 4.0.0-beta.2, Weglot (translation), Flatpickr, Select2, Wistia video embeds, Google Tag Manager, Zendesk widget
Frameworks
Yoast SEO
Platforms
WordPress
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enabled
  • Domain status includes clientDeleteProhibited, clientTransferProhibited, clientUpdateProhibited

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Cookiebot
Marketing tools
Weglot translation, Wistia video hosting, Zendesk support widget
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 multimedia.
  2. No explicit privacy or cookie policies found on main page or header.
  3. Contact information is available via contact page but no direct emails or phone numbers found in HTML.
  4. Strong branding and professional design with consistent use of logos and colors.
  5. Use of modern web technologies and performance optimizations (lazy loading, minification).
  6. No security.txt or vulnerability disclosure page detected.
  7. No explicit security or incident response policies published.
  8. Multiple integrations and marketing tools used, indicating mature SaaS platform.
  9. No suspicious or malicious content detected.
Technical notes

Notes

The website is built on WordPress with a modern tech stack including WP Rocket for performance optimization, jQuery 4 beta, Weglot for multilingual support, and Wistia for video hosting. The site uses lazy loading and script deferring to improve load times, resulting in fast performance. SEO is enhanced by Yoast SEO plugin and proper meta tags including Open Graph and JSON-LD structured data. Mobile optimization is excellent with responsive design and separate mobile editing capabilities. Accessibility features appear adequate though not explicitly detailed. Hosting is supported by Amazon Registrar and AWS DNS servers, indicating reliable infrastructure. Technical risks include reliance on multiple third-party scripts and lack of DNSSEC, which should be addressed to maintain operational security and performance.
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. 65/100 −4Medium33 findingsView report
  2. 69/100 −2Medium32 findingsView report
  3. 71/100Medium27 findingsView report
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