Security report for lnk.to

Linkfire A/S · Technology · Denmark

High risk. 15 critical or high findings in Network security, Security headers and 1 other check.

Security score

49/100

Risk levelHigh

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

Linkfire A/S operates a sophisticated SaaS platform specializing in smart links for music marketing and podcast promotion. The company targets artists, labels, podcasters, publishers, and advertisers, providing tools to simplify promotion, increase engagement, and measure performance. The website reflects a mature digital presence with professional branding, clear navigation, and comprehensive content tailored to its audience. Technically, the site leverages HubSpot CMS, Google Tag Manager, and OneTrust for cookie consent, indicating a modern and compliant infrastructure. Security posture is strong with HTTPS, security headers, and no visible vulnerabilities, though explicit security policies and incident response contacts are absent. The missing WHOIS data is a notable gap but does not detract significantly from the site's legitimacy given the professional presentation and known company identity. Overall, the site is trustworthy, well-optimized, and compliant with privacy regulations.

Scanned

This is an earlier scan of lnk.to. View the latest report

NIS2 and GDPR posture

GDPR outside view: 88/ 100 · Low
Checks completed: 7of 7

NIS2 Art. 21(2)

(a) Risk analysis and security policies: Not visible from outside
(b) Incident handling: One indicator
(c) Business continuity, backups and crisis management: Not visible from outside
(d) Supply chain security: Not visible from outside
(e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
(f) Assessing the effectiveness of security measures: Not visible from outside
(g) Cyber hygiene and security training: Not visible from outside
(h) Cryptography and encryption: Partly checked
(i) HR security, access control and asset management: One indicator
(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

15 findings rated critical or high. Fix these first.

Network security
Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.
- Critical
  Critical Service Exposed: Telnet
  Port 23 (Telnet) is publicly accessible - Telnet - Unencrypted remote access
  What to do: Immediately restrict access to Telnet using firewall or VPN
  References
  - NIS2 21(2)(e)
  - IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
  - NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
  - NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
- Critical
  Critical Service Exposed: SMB
  Port 445 (SMB) is publicly accessible - SMB - Windows file sharing, high risk
  What to do: Immediately restrict access to SMB using firewall or VPN
  References
  - NIS2 21(2)(e)
  - IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
  - NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
  - NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
- Critical
  Critical Service Exposed: MSSQL
  Port 1433 (MSSQL) is publicly accessible - MSSQL - Database server
  What to do: Immediately restrict access to MSSQL using firewall or VPN
  References
  - NIS2 21(2)(e)
  - IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
  - NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
  - NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
- Critical
  Critical Service Exposed: Oracle
  Port 1521 (Oracle) is publicly accessible - Oracle - Database server
  What to do: Immediately restrict access to Oracle using firewall or VPN
  References
  - NIS2 21(2)(e)
  - IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
  - NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
  - NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
- Critical
  Critical Service Exposed: MySQL
  Port 3306 (MySQL) is publicly accessible - MySQL - Database server
  What to do: Immediately restrict access to MySQL using firewall or VPN
  References
  - NIS2 21(2)(e)
  - IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
  - NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
  - NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
- Critical
  Critical Service Exposed: RDP
  Port 3389 (RDP) is publicly accessible - RDP - Remote Desktop, prime ransomware target
  What to do: Immediately restrict access to RDP using firewall or VPN
  References
  - NIS2 21(2)(e)
  - IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
  - NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
  - NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
- Critical
  Critical Service Exposed: PostgreSQL
  Port 5432 (PostgreSQL) is publicly accessible - PostgreSQL - Database server
  What to do: Immediately restrict access to PostgreSQL using firewall or VPN
  References
  - NIS2 21(2)(e)
  - IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
  - NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
  - NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
- Critical
  Critical Service Exposed: Redis
  Port 6379 (Redis) is publicly accessible - Redis - In-memory database
  What to do: Immediately restrict access to Redis using firewall or VPN
  References
  - NIS2 21(2)(e)
  - IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
  - NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
  - NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
- Critical
  Critical Service Exposed: MongoDB
  Port 27017 (MongoDB) is publicly accessible - MongoDB - NoSQL database
  What to do: Immediately restrict access to MongoDB using firewall or VPN
  References
  - NIS2 21(2)(e)
  - IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
  - NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
  - NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
- High
  High-Risk Service Exposed: FTP
  Port 21 (FTP) is publicly accessible - FTP - Often unencrypted file transfer
  What to do: Consider restricting access to FTP or implementing strong authentication
  References
  - NIS2 21(2)(e)
  - IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
  - NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
  - NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
- High
  High-Risk Service Exposed: RPC
  Port 135 (RPC) is publicly accessible - RPC - Windows RPC endpoint
  What to do: Consider restricting access to RPC or implementing strong authentication
  References
  - NIS2 21(2)(e)
  - IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
  - NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
  - NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
- High
  High-Risk Service Exposed: NetBIOS
  Port 139 (NetBIOS) is publicly accessible - NetBIOS - Windows file sharing
  What to do: Consider restricting access to NetBIOS or implementing strong authentication
  References
  - NIS2 21(2)(e)
  - IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
  - NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
  - NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
- High
  High-Risk Service Exposed: Elasticsearch
  Port 9200 (Elasticsearch) is publicly accessible - Elasticsearch - Search engine
  What to do: Consider restricting access to Elasticsearch or implementing strong authentication
  References
  - NIS2 21(2)(e)
  - IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
  - NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
  - NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
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"
  References
  - CWE-1021
  - OWASP A06:2025
  - CAPEC-103
  - ASVS V3.4.6
  - OWASP Secure Headers: OWASP Secure Headers Project recommends X-Frame-Options: deny
  - RFC 7034
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
  References
  - CWE-326
  - OWASP A04:2025
  - Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048
  - NIS2 21(2)(h)
  - IR 2024/2690 9.2(b): Implementing Regulation (EU) 2024/2690, Annex point 9.2(b): Cryptography
  - NIST SC-13: NIST SP 800-53 Rev. 5 SC-13: Cryptographic Protection

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DNS records
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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: 65
Security headers: 45
Email security: 80
DNS health: 85
Network security: 0
GDPR outside view: 88
Average: 61
After the cap: 49

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 · found on this site
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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention lnk.to, from OffSeq Breach.

Total records: 192
Employees: 0
Customers: 153
Third parties: 39
Weak passwords: 0%

11 subdomains affected

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Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Linkfire holds a strong market position as a technology provider in the music and podcast marketing sector, serving over 50,000 artists and major labels. Its business model is SaaS-based, generating revenue through subscription plans and marketing services. The company benefits from strategic partnerships (e.g., lnk.to) and a robust ecosystem including publishers and advertisers. The platform's analytics and promotional tools provide competitive advantages by enabling clients to optimize fan engagement and campaign effectiveness. Growth indicators include a large user base and continuous content updates such as blogs and case studies. The company is headquartered in Denmark, reinforcing its European market focus and GDPR compliance.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, comprehensive security headers, and cookie consent mechanisms aligned with GDPR. However, the absence of a published security policy, incident response plan, or vulnerability disclosure program limits transparency and preparedness perception. No exposed sensitive data or vulnerable libraries were detected. The use of third-party marketing and tracking tools is standard but requires ongoing vigilance to mitigate supply chain risks. Overall, the security maturity is good but could be enhanced by publishing explicit security governance documents and providing direct security contact channels.

Recommendations

Publish a dedicated security policy page outlining security practices and compliance.
Implement and publicize a vulnerability disclosure program or security.txt file.
Provide a direct security or abuse contact email to facilitate incident reporting.
Regularly review and audit third-party scripts and marketing tools for vulnerabilities.
Enhance transparency by including data retention policies and detailed privacy disclosures.

Contact details published on the site

Addresses

Rentemestervej 80, 2400 Copenhagen, Denmark (map, opens in a new tab)

Legal name

Linkfire A/S

Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company: Linkfire A/S
Description: Smart links for music marketing and podcast promotion. From your first single to your first world tour, Linkfire simplifies music and podcast promotion every step of the way. Trusted by major labels and over 50k artists.
Key services: Smartlinks creation, Music marketing, Podcast promotion, Analytics and measurement, Fan engagement tools
Content quality: excellent
Branding: consistent

Technology

Stack: Google Tag Manager, HubSpot CMS, OneTrust Cookie Consent, ClickCease, Google Fonts (Roboto), JSON-LD structured data
Frameworks: HubSpot CMS
Platforms: Web
Performance: fast
Mobile: excellent
Accessibility: good
SEO: excellent

Security

Observed score

90/100

Good practices seen

HTTPS enforced
Cookie consent implemented
No exposed sensitive data in HTML
Use of security headers

Analytics and tracking

Services: HubSpot Analytics, Google Tag Manager
Tracking level: moderate
Privacy practices: good

Advertising

Ad networks: ClickCease
Tracking pixels: ClickCease
Marketing tools: HubSpot Analytics, HubSpot Collected Forms
Transparency: good

Site quality

Design: excellent
User experience: excellent
Content relevance: excellent
Navigation: excellent
Professionalism: excellent
Trustworthiness: high

Key observations

Website is fully accessible with no blocking or WAF challenges.
Content is professionally presented and relevant to music and podcast marketing.
Strong use of HubSpot CMS and marketing/analytics tools.
Privacy and cookie policies are present and GDPR compliant.
No direct security or incident response contact information found.
WHOIS data is missing, which reduces transparency but does not negate legitimacy.
No adult or explicit content detected; safe for general audiences.

Technical notes

Notes

The website is built on HubSpot CMS, utilizing modern web technologies including Google Tag Manager for analytics and OneTrust for cookie consent management. The site is mobile-optimized with responsive images and fonts, ensuring excellent user experience across devices. Performance is fast with efficient resource loading and minimal blocking scripts. SEO is well-implemented with proper meta tags, Open Graph data, and structured JSON-LD schema describing the organization. Accessibility features are present but could be further improved with explicit ARIA roles and keyboard navigation aids. Hosting provider details are not explicit but likely managed via HubSpot infrastructure. Overall, the technical implementation is robust, scalable, and aligned with best practices.

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.

OWASP Top 10:2025 (opens in a new tab)2025 (membership per CWE 4.20) · CC BY-SA 4.0
OWASP ASVS (opens in a new tab)5.0.0 · CC BY-SA 4.0
OWASP Web Security Testing Guide (opens in a new tab)latest (checklist.json, master) · CC BY-SA 4.0
OWASP Secure Headers Project (opens in a new tab)2026-10-18 · Apache-2.0
Mozilla Server Side TLS (intermediate) (opens in a new tab)6.0 · MPL-2.0
NIST SP 800-53 Rev. 5 (OSCAL catalog) (opens in a new tab)5.2.0 · Public domain (US Government work)
Directive (EU) 2022/2555 (NIS2) (opens in a new tab)OJ L 333, 27.12.2022 · EUR-Lex reuse under Commission Decision 2011/833/EU (© European Union)
Commission Implementing Regulation (EU) 2024/2690 (opens in a new tab)OJ L, 18.10.2024 · EUR-Lex reuse under Commission Decision 2011/833/EU (© European Union)
Regulation (EU) 2016/679 (GDPR) (opens in a new tab)OJ L 119, 4.5.2016 · EUR-Lex reuse under Commission Decision 2011/833/EU (© European Union)
Directive 2002/58/EC (ePrivacy), consolidated (opens in a new tab)19.12.2009 · EUR-Lex reuse under Commission Decision 2011/833/EU (© European Union)
RFC Editor metadata (opens in a new tab)per-RFC (obsolete RFCs rejected) · IETF Trust Legal Provisions (metadata only)
NIST CSRC, W3C TR, IETF Datatracker, EDPB, EUR-Lex CELLAR and gesetze-bayern.de (opens in a new tab)per document · Titles and links only
W3C WCAG 2.2 (opens in a new tab)W3C Recommendation (wcag.json) · W3C Software and Document License
Directive (EU) 2019/882 (European Accessibility Act) (opens in a new tab)OJ L 151, 7.6.2019 · EUR-Lex reuse under Commission Decision 2011/833/EU (© European Union)
Directive (EU) 2016/2102 (Web Accessibility Directive) (opens in a new tab)OJ L 327, 2.12.2016 · EUR-Lex reuse under Commission Decision 2011/833/EU (© European Union)

Retrieved 2026-10-25

Earlier scans of this domain

14 Oct 202549/100High39 findingsView report

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Priority findings

Network security

Critical Service Exposed: Telnet

Critical Service Exposed: SMB

Critical Service Exposed: MSSQL

Critical Service Exposed: Oracle

Critical Service Exposed: MySQL

Critical Service Exposed: RDP

Critical Service Exposed: PostgreSQL

Critical Service Exposed: Redis

Critical Service Exposed: MongoDB

High-Risk Service Exposed: FTP

High-Risk Service Exposed: RPC

High-Risk Service Exposed: NetBIOS

High-Risk Service Exposed: Elasticsearch

Security headers

Missing X-Frame-Options header

SSL/TLS

Weak SSL Key Length

Keep watching lnk.to

Daily monitoring

Full report

Results by check

Security headers, 6 findings, score 45/100

SSL/TLS, 4 findings, score 65/100

Email security, 4 findings, score 80/100

DNS health, 2 findings, score 85/100

Network security, 14 findings, score 0/100

GDPR outside view, 1 finding, score 88/100

NIS2 outside view, Earlier method, rescan for details · not counted in the security score–