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Security report for stackopera.com

Stackopera · Technology · Czech Republic

Medium risk. 7 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

63/100

Risk levelMedium

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

Stackopera.com is a Czech-based online platform providing the largest overview of Czech business software solutions, targeting companies seeking software products and advisory services. Founded in 2021, it offers a searchable directory with over 800 products and discount offers, aiming to simplify software selection for businesses. The website is built on the Bubble.io platform, leveraging modern JavaScript libraries and includes integrations with analytics and tracking tools such as Hotjar and Microsoft Clarity. The site is well-structured, mobile-optimized, and provides clear contact information and cookie consent mechanisms, reflecting a moderate level of digital maturity. Security posture is adequate with HTTPS enabled but lacks advanced security headers and DNSSEC, and no explicit security or incident response policies are published. Overall, the platform presents a professional and trustworthy business presence with room for improvement in security and compliance documentation.

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 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

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 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 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

      Third-party services without privacy policy

      Detected services: Google Analytics, Facebook, YouTube, Cloudflare, Google APIs

      What to do: Document all third-party data sharing in your privacy policy

  3. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • High

      No SPF record found

      SPF helps prevent email spoofing

      What to do: Add SPF record: "v=spf1 include:_spf.yourmailprovider.com ~all"

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

Keep watching stackopera.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

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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
52
Security headers
60
Email security
50
DNS health
65
Network security
100
GDPR outside view
50
Average
63

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

Stackopera holds a strong market position as the largest Czech software directory for businesses, focusing on technology sector clients. Its business model revolves around providing free software search and advisory services, potentially monetized through partnerships or promotions. The platform targets small to medium-sized Czech companies looking for ERP, CRM, and other business software. The company maintains active social media channels on YouTube and Facebook, enhancing its outreach. The domain age and registration details align with the business's recent establishment. No parent or subsidiary companies are identified, indicating an independent operation. The website content is consistent and professionally presented, supporting credibility and user trust.

Security posture

The website employs HTTPS and a cookie consent banner, indicating basic compliance with security and privacy norms. However, the absence of DNSSEC and security headers such as Content-Security-Policy or X-Frame-Options represents potential vulnerabilities. No security policy or incident response contact information is published, which limits transparency and preparedness for security incidents. The use of third-party analytics and tracking tools introduces moderate user tracking, necessitating clear privacy disclosures. Overall, the security maturity is moderate but could benefit from enhanced technical controls and policy documentation to align with best practices and regulatory requirements.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS security and prevent spoofing.
  2. Implement standard security headers (Content-Security-Policy, X-Frame-Options, X-Content-Type-Options) to mitigate common web vulnerabilities.
  3. Publish a dedicated security policy and provide incident response contact channels to enhance transparency and trust.
  4. Review and update privacy policy to explicitly address GDPR compliance and data retention practices.
  5. Conduct regular security audits and vulnerability assessments to proactively identify and remediate risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Stackopera
Description
Najděte software pro vaši firmu během 2 minut. Více než 800 produktů a slevových nabídek na firemní software na jednom místě. Nemrhejte čas hledáním na internetu. Hledejte rychle, jednoduše a zcela zdarma.
Key services
Software search and comparison, Advisory services, Discount offers on business software
Content quality
good
Branding
consistent

Technology

Stack
Bubble.io, JavaScript, Google Fonts, Phosphor Icons, Feather Icons, Typed.js, Popper.js, Tippy.js, Hotjar, Microsoft Clarity
Frameworks
Bubble.io
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
65/100
Good practices seen
  • HTTPS enabled
  • Cookie consent mechanism

Analytics and tracking

Services
Hotjar, Microsoft Clarity, Google Analytics (via GTM)
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Hotjar, Microsoft Clarity
Marketing tools
Typed.js
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is primarily in Czech language targeting Czech businesses.
  3. Uses Bubble.io platform with modern JavaScript libraries.
  4. Includes cookie consent banner compliant with EU regulations.
  5. Contact information is clearly provided with email and phone.
  6. No explicit privacy or security policies beyond basic terms and cookie consent.
  7. No advanced security headers detected.
  8. No vulnerability disclosure or security.txt found.
  9. Social media presence on YouTube and Facebook.
  10. No suspicious or malicious content detected.
Technical notes

Notes

The website is built on the Bubble.io platform, utilizing modern JavaScript libraries including Typed.js, Popper.js, Tippy.js, and icon libraries like Phosphor and Feather Icons. It integrates analytics tools such as Hotjar, Microsoft Clarity, and Google Tag Manager for user behavior tracking. The site loads moderately fast and is mobile-optimized with good SEO meta tags and structured data (JSON-LD). Hosting is via Bubble's CDN and domain registrar is Ascio Technologies. No CMS other than Bubble is detected. Accessibility features are basic, and there is some technical debt in missing security headers and DNSSEC. Overall, the technical infrastructure supports the business needs but has opportunities for modernization and security enhancements.
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

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