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Security report for tradera.com

Tradera · E-commerce · Sweden

Low risk. 3 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

82/100

Risk levelLow

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

Tradera is Sweden's largest circular marketplace specializing in buying and selling second hand and vintage items across various categories such as fashion, home decor, electronics, and collectibles. The platform operates as an online auction and fixed-price marketplace targeting Swedish consumers interested in sustainable and affordable shopping. The website demonstrates a professional design with clear navigation and popular search suggestions, indicating a mature e-commerce presence. Technically, Tradera employs modern web technologies including Next.js and React, supported by extensive use of third-party analytics and advertising services such as Google Analytics, Facebook Pixel, and Criteo. The site is mobile optimized and performs moderately well, though accessibility features are basic. Security posture is generally good with HTTPS enforced, but lacks visible security headers and explicit security policies. Privacy compliance is limited, with no clear privacy or cookie policies detected in the provided content. The absence of WHOIS data for the domain is a notable concern, reducing domain trustworthiness despite the professional website content. Overall, Tradera presents as a credible and established e-commerce platform with room for improvement in transparency and security best practices.

Scanned

NIS2 and GDPR posture

GDPR outside view
85/ 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

3 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 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 tradera.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

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

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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
67
Security headers
70
Email security
87
DNS health
85
Network security
100
GDPR outside view
85
Average
82

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

Tradera holds a strong market position as Sweden's leading circular marketplace, leveraging a business model centered on peer-to-peer sales and auctions of second hand goods. Its key competitive advantages include a broad product range, user-friendly search and category navigation, and integration with popular payment and shipping services. Revenue streams likely include listing fees, commissions on sales, and advertising partnerships. The target customer segment is environmentally conscious consumers seeking sustainable shopping options. The platform's partnership ecosystem includes major advertising and analytics providers, enhancing marketing reach and user insights. Strategic observations suggest opportunities to enhance trust through improved privacy disclosures and security transparency, which could further solidify customer confidence and regulatory compliance.

Security posture

The website enforces HTTPS, ensuring encrypted communication, and employs deferred loading of security-related scripts to optimize performance. However, the lack of visible security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options indicates potential gaps in defense-in-depth strategies. No exposed sensitive data or vulnerable libraries were detected in the HTML content. The absence of explicit privacy policies, cookie consent mechanisms, and incident response contacts suggests limited compliance with GDPR and related regulations. The extensive use of third-party tracking and advertising services increases the attack surface and privacy risks. Overall, the security maturity is moderate, with key strengths in encryption but weaknesses in policy transparency and header implementation.

Recommendations

  1. Implement comprehensive security headers including CSP, HSTS, and X-Frame-Options to enhance protection against common web attacks.
  2. Publish clear and accessible privacy and cookie policies with explicit GDPR compliance statements and user consent mechanisms.
  3. Provide dedicated security and incident response contact information to improve transparency and readiness.
  4. Establish a vulnerability disclosure program and publish a security.txt file to encourage responsible reporting.
  5. Regularly audit third-party scripts and tracking services to minimize privacy risks and ensure compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Tradera
Description
Sveriges största cirkulära marknad. Köp & sälj begagnat & second hand, enkelt & hållbart. Mode, Inredning, Elektronik, Motor, Samlarobjekt & mer | Tradera.
Key services
Online auction platform, Fixed price sales, Category-based browsing and search, User account management
Content quality
good
Branding
consistent

Technology

Stack
Next.js, React, Google Tag Manager, Google Analytics, Facebook Pixel, DoubleClick, Criteo, InMobi CMP, UA SDK for push notifications
Frameworks
Next.js
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of security-related scripts deferred
  • No exposed sensitive data in HTML

Analytics and tracking

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

Advertising

Ad networks
Google AdSense, DoubleClick, Criteo, Bing Ads, Google Ads, InMobi
Tracking pixels
Facebook Pixel, Criteo, DoubleClick
Marketing tools
InMobi CMP
Transparency
basic

Site quality

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

Key observations

  1. Website is a professional e-commerce marketplace focused on second hand goods in Sweden.
  2. No WHOIS data available, which is unusual for a commercial .com domain.
  3. No explicit privacy, cookie, or terms of service pages detected in the provided HTML snippet.
  4. Multiple popular ad and tracking services are integrated, indicating extensive user tracking.
  5. No direct company contact emails or phone numbers found in the HTML content.
  6. Website uses modern web technologies and frameworks (Next.js, React).
  7. No security.txt or vulnerability disclosure information found.
  8. No explicit security policy or incident response contact information found.
  9. No certifications or compliance badges visible in the content.
  10. Website is accessible without WAF or blocking mechanisms.
Technical notes

Notes

Tradera's technical infrastructure is built on a modern JavaScript framework (Next.js) with React for frontend rendering, enabling server-side rendering and improved SEO. The site integrates multiple analytics and advertising technologies, including Google Tag Manager, Google Analytics, Facebook Pixel, and Criteo, indicating a sophisticated marketing stack. Performance is moderate with deferred script loading and preconnect hints to optimize resource fetching. Mobile optimization is good, supporting responsive design and touch interactions. Accessibility features are basic, with room for improvement in ARIA roles and keyboard navigation. No CMS or hosting provider details were explicitly identified. Technical risks include reliance on numerous third-party scripts which may impact privacy and security if not properly managed.
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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