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Security report for coin.network

BuySellAds.com, Inc. · Technology · United States

Medium risk. 4 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

69/100

Risk levelMedium

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

Coin.Network is a specialized crypto advertising network operated by BuySellAds.com, Inc., focusing on connecting advertisers with niche crypto audiences through programmatic display and native ads. The platform serves over 133 million monthly ad impressions and partners with leading crypto brands and publishers, establishing a strong market position in the crypto ad tech space. The website is professionally designed, mobile-optimized, and built on the HubSpot CMS platform, reflecting a mature digital infrastructure. Security posture is solid with HTTPS and no visible vulnerabilities, though some enhancements like DNSSEC and security headers could improve resilience. Privacy and terms policies are comprehensive and hosted on the parent company's domain, with cookie consent mechanisms in place. Contact is primarily via email and web forms, with no phone numbers or physical addresses explicitly listed. Overall, Coin.Network presents a trustworthy and professional service for crypto advertisers and publishers.

Scanned

This is an earlier scan of coin.network. View the latest report

NIS2 and GDPR posture

GDPR outside view
68/ 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

4 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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

  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

  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 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

  4. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • High

      Weak SPF Policy

      SPF record has permissive policy allowing any server to send email

      What to do: Use -all or ~all qualifier for better email security

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

Keep watching coin.network

This scan found 22 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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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
75
Security headers
55
Email security
70
DNS health
45
Network security
100
GDPR outside view
68
Average
69

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

The company leverages its long-standing presence since 2014 and its parent company BuySellAds.com to offer a focused crypto advertising solution. Its business model centers on programmatic and native advertising targeting crypto enthusiasts across curated partner sites. The partnership ecosystem includes reputable crypto platforms such as CoinGecko, Bitpanda, and Okcoin, enhancing credibility and reach. Revenue streams likely include ad campaign management fees and self-serve platform commissions. The company targets crypto advertisers and publishers seeking specialized audience engagement, supported by testimonials and a strong brand presence. Growth indicators include high monthly impressions and active user counts. Strategic observations suggest continued investment in platform capabilities and expanding partner networks.

Security posture

The website enforces HTTPS with good SSL configuration and avoids exposing sensitive data. However, it lacks explicit security headers like Content Security Policy and HSTS, which are recommended for enhanced protection. No public security policy or incident response information is available, and no vulnerability disclosure or security.txt file is found, indicating room for improvement in transparency and readiness. The use of HubSpot analytics and scripts is standard but requires regular auditing to prevent third-party risks. Overall, the security maturity is moderate to good, with no critical vulnerabilities detected but some compliance and best practice gaps.

Recommendations

  1. Enable DNSSEC on the domain to strengthen DNS security and prevent spoofing.
  2. Implement and publish a formal security policy and incident response plan on the website.
  3. Add standard security headers such as Content Security Policy, HSTS, and X-Frame-Options.
  4. Create and maintain a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  5. Regularly audit third-party scripts and analytics tools to mitigate supply chain risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
BuySellAds.com, Inc.
Description
Coin.Network's crypto ad network helps advertisers reach niche, engaged crypto audiences, and publishers monetize their ads through relevant, quality ads.
Key services
Programmatic display ads, Native ads network, Self-serve ad buying platform
Content quality
excellent
Branding
consistent

Technology

Stack
HubSpot CMS, Cloudflare DNS, JavaScript, CSS, SVG
Frameworks
HubSpot
Platforms
HubSpot
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • No vulnerable libraries detected

Analytics and tracking

Services
HubSpot Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Coin.Network, BuySellAds
Tracking pixels
HubSpot Analytics
Marketing tools
HubSpot
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 professional design
  2. Strong presence in crypto advertising niche with reputable partners
  3. Uses HubSpot CMS and analytics, indicating modern marketing infrastructure
  4. No security policy or incident response info publicly available
  5. Privacy and terms policies are hosted on parent BuySellAds domain
  6. No phone numbers or physical addresses explicitly listed on main site
  7. Contact primarily via email and contact forms
  8. No security.txt or vulnerability disclosure found
  9. No DNSSEC enabled for domain
  10. SSL is properly configured with HTTPS
Technical notes

Notes

The website is built on the HubSpot CMS platform, leveraging modern web technologies including SVG graphics, responsive CSS, and JavaScript for interactivity. Hosting and DNS are managed via HubSpot and Cloudflare respectively, providing reliable infrastructure. Performance is moderate with good mobile optimization and accessibility features. SEO is well addressed with proper meta tags and Open Graph data. The technical stack is modern and well-maintained, though enabling DNSSEC and adding security headers would further enhance the technical security posture. No deprecated or vulnerable libraries were detected in the provided content.
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. 59/100 −12Medium27 findingsView report
  2. 71/100Medium29 findingsView report
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