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Security report for app.link

Branch · Technology · United States

Medium risk. 5 critical or high findings in Security headers and GDPR outside view.

Security score

68/100

Risk levelMedium

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

Branch is a US-based technology company specializing in deep linking and attribution services for mobile applications and web platforms. The company operates a B2B SaaS model targeting developers and marketers who require advanced linking and analytics solutions. The domain app.link is registered to Branch with consistent WHOIS data, indicating legitimate ownership and a stable market presence since 2015. However, the analyzed page content is minimal, displaying only an error message indicating a missing or incorrect link, which limits the ability to assess the full website capabilities or content. From a technical perspective, the website leverages AWS DNS infrastructure and serves static content via a CDN. The HTML content is minimal with no metadata, structured data, or scripts detected, suggesting this is an error or placeholder page rather than a full website landing page. Security posture is moderate with HTTPS enabled and domain transfer protection, but lacks DNSSEC and visible security headers. No privacy or cookie policies are present, and no contact or social media information is available on this page. The security evaluation shows no immediate vulnerabilities but highlights areas for improvement such as enabling DNSSEC and adding security headers. The absence of privacy and cookie policies indicates non-compliance with GDPR and other privacy regulations on this page. Overall, the website content quality and user experience are poor due to the minimal and error-focused content, resulting in a low AI score. The domain registration data supports legitimacy, but the lack of accessible content limits comprehensive analysis. Strategically, Branch should ensure that valid content is served at this domain or redirect users appropriately to avoid confusion. Enhancing security configurations and publishing clear privacy and security policies would improve trust and compliance. This analysis is limited to the provided page and WHOIS data; a full website audit would require access to active content pages.

Scanned

This is an earlier scan of app.link. View the latest report

NIS2 and GDPR posture

GDPR outside view
40/ 100 · High
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

5 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"

    • 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

      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

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

Keep watching app.link

This scan found 21 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
100
Security headers
30
Email security
70
DNS health
70
Network security
100
GDPR outside view
40
Average
68

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

Branch operates in the technology sector providing mobile deep linking and attribution services, positioning itself as an important player in mobile marketing technology. The company targets developers and marketers requiring sophisticated linking and analytics tools. The business model is SaaS-based, generating revenue through platform subscriptions and usage. The domain age and registration details align with the company's founding year, indicating stable operations. No partner or subsidiary domains were identified from the provided data. The lack of visible marketing or analytics tools on the error page limits insight into their broader digital marketing ecosystem. Branch's market position is supported by consistent domain registration and recognized brand presence in the mobile technology space.

Security posture

The security posture of the domain app.link is moderate. HTTPS is enabled, and the domain status includes clientTransferProhibited, which protects against unauthorized transfers. However, DNSSEC is not enabled, which is a recommended best practice to prevent DNS spoofing. No security headers were detected in the provided data, indicating potential gaps in HTTP security configurations. The website page analyzed is minimal and does not contain forms or scripts that could introduce vulnerabilities. No incident response or security policy information is published on the page, limiting transparency. Overall, while no critical vulnerabilities are evident, improvements in DNS security and HTTP headers are advised to enhance protection and compliance.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS security and prevent spoofing attacks.
  2. Implement standard security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  3. Publish comprehensive privacy and cookie policies to comply with GDPR and enhance user trust.
  4. Provide clear contact information and security incident response contacts on the website.
  5. Ensure the domain serves meaningful content or redirects users to active pages to improve user experience and SEO.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Branch
Description
Branch is a technology company providing deep linking and attribution services for mobile apps and web.
Key services
Deep linking, Attribution analytics, Mobile marketing tools
Content quality
poor
Branding
moderate

Technology

Stack
AWS DNS, CSS stylesheet from cdn.branch.io
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
poor

Security

Observed score
70/100
Good practices seen
  • HTTPS enabled
  • Domain status clientTransferProhibited

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

Design
poor
User experience
poor
Content relevance
poor
Navigation
poor
Professionalism
poor
Trustworthiness
low

Key observations

  1. Website content is minimal and only shows a 'link not found' error message.
  2. No privacy, cookie, or terms of service policies found on the page.
  3. No contact information or forms present on the page.
  4. No security headers detected in the provided data.
  5. Domain is registered to a known company 'Branch' with consistent WHOIS data.
  6. DNSSEC is not enabled, which is a security improvement opportunity.
  7. Website uses AWS DNS and CDN for hosting and static content delivery.
  8. No analytics or tracking scripts detected in the provided HTML.
  9. No social media or external marketing links found in the HTML content.
Technical notes

Notes

The technical infrastructure for app.link includes AWS DNS hosting and CDN delivery of static assets such as CSS. The HTML content is minimal and lacks metadata, structured data, or scripts, indicating this is an error or placeholder page rather than a fully developed website. No CMS or frameworks are detected. Performance is likely moderate given the use of CDN, but mobile optimization and accessibility are basic due to minimal content. SEO optimization is poor as no meta tags or structured data are present. The domain registration is consistent and stable, but DNSSEC is not enabled, representing a technical risk. Overall, the technical setup is functional but minimal and could benefit from modernization and enhanced security configurations.
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. 68/100Medium29 findingsView report
  2. 68/100 −5Medium29 findingsView report
  3. 73/100Medium22 findingsView report
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