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Security report for sinch.com

Sinch · Technology · N/a

Low risk. 2 critical or high findings in SSL/TLS.

Security score

80/100

Risk levelLow

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

Sinch is a well-established enterprise technology company specializing in programmable communication APIs including SMS, voice, email, video, and verification services. Recognized as a leader in the CPaaS market by Gartner, Sinch targets developers, enterprises, telcos, and marketing teams with a comprehensive suite of communication solutions. The website reflects a mature digital presence with excellent content quality, clear navigation, and strong branding consistency. Technically, the site is built on WordPress with modern SEO and performance optimizations, hosted on AWS infrastructure. Security posture is robust with HTTPS enforcement, ISO 27001 certification, and domain security best practices, though DNSSEC is not enabled and incident response contacts are not explicitly published. Overall, Sinch demonstrates a high level of business credibility and digital maturity.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 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

2 findings rated critical or high. Fix these first.

  1. 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
    • 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

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

Keep watching sinch.com

This scan found 18 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

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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
85
Email security
80
DNS health
80
Network security
100
GDPR outside view
83
Average
80

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

Sinch operates in the technology and telecommunications sectors, providing APIs and platforms that enable enterprises to integrate messaging, voice, email, and verification into their customer engagement workflows. Their business model is B2B SaaS and API-driven, serving a global enterprise customer base. The company has a strong partnership ecosystem including Mailjet, Mailgun, Adobe, SAP, and HubSpot. Market positioning is strong as a Gartner Magic Quadrant leader, indicating competitive advantage and market trust. The website content and structure support multiple languages and regions, reflecting a global footprint. Sinch's strategic focus on security and compliance is evident through dedicated pages and certifications, enhancing trust with enterprise clients.

Security posture

Sinch maintains a mature security posture with HTTPS enforced site-wide, domain status set to clientTransferProhibited, and ISO 27001 certification indicating adherence to international security standards. The presence of a dedicated Security & Compliance page further supports their commitment to security best practices. However, DNSSEC is not enabled, which could be a potential area for DNS-level security improvement. No explicit security.txt or vulnerability disclosure policy was found, and incident response contact channels are not clearly published, which could be enhanced to improve transparency and readiness. Overall, the site shows no visible vulnerabilities or exposed sensitive data, reflecting good security hygiene.

Recommendations

  1. Enable DNSSEC on the domain to enhance DNS security and prevent spoofing.
  2. Publish a security.txt file to facilitate responsible vulnerability disclosure.
  3. Provide explicit incident response contact information such as security@ or abuse@ email addresses.
  4. Review and implement a comprehensive Content-Security-Policy header to mitigate XSS risks.
  5. Maintain and update privacy and cookie policies regularly to ensure ongoing GDPR compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Sinch
Description
Unlock meaningful conversations across the customer journey with programmable SMS, voice, email, video, & verification APIs.
Key services
Messaging APIs, Voice APIs, Email APIs, Verification APIs, Contact Center Solutions, Chatbot Builder, Telco Infrastructure
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, Yoast SEO, AWS DNS, Rocket Lazy Load Scripts, Google Fonts (DM Sans), SVG icons
Frameworks
WPML (WordPress Multilingual), Yoast SEO
Platforms
WordPress CMS
Performance
fast
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • ClientTransferProhibited domain status
  • ISO 27001 certification
  • Security & Compliance page available

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Marketing tools
Yoast SEO
Transparency
basic

Site quality

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

Key observations

  1. Website is professionally designed and well-structured.
  2. Content is comprehensive and targeted at enterprise customers and developers.
  3. Strong presence of trust indicators including certifications and Gartner recognition.
  4. No signs of malicious or suspicious activity.
  5. Good technical implementation with modern technologies and SEO optimization.
  6. Security posture is strong but could improve DNSSEC and incident response transparency.
Technical notes

Notes

The website is built on WordPress CMS with multilingual support via WPML and SEO optimized using Yoast SEO plugin. It uses modern web fonts (DM Sans), SVG icons, and lazy loading scripts to optimize performance. Hosting is on AWS infrastructure, indicated by DNS nameservers. The site is mobile-optimized with responsive design and accessibility considerations. Performance is fast with preloading and preconnect hints for fonts and scripts. Technical debt appears low with modern best practices in place. Opportunities exist to further enhance security headers and DNS security. Overall, the technical infrastructure supports a robust and scalable digital presence suitable for an enterprise-grade communication platform.
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. 81/100Low25 findingsView report
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