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Security report for buffer.com

Buffer · Technology · N/a

Low risk. 3 critical or high findings in Security headers and SSL/TLS.

Security score

78/100

Risk levelLow

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

Buffer is a well-established social media management platform founded in 1996, offering a comprehensive suite of tools for content creation, publishing, analytics, engagement, and team collaboration. The company targets small businesses and social media professionals, positioning itself as a trusted and user-friendly SaaS solution with over 190,000 active users. The website reflects a mature digital presence with excellent design, clear navigation, and strong branding consistency. Technically, Buffer employs modern web technologies including React and Next.js, hosted behind Cloudflare, ensuring fast performance and robust security. The site implements comprehensive cookie consent mechanisms aligned with GDPR requirements and uses multiple analytics and marketing tools responsibly. Security posture is strong with HTTPS, security headers, and CSRF protections, though DNSSEC is not enabled. No critical vulnerabilities or exposed sensitive data were detected. Overall, Buffer demonstrates high business credibility and digital maturity, with minor recommendations to enhance security transparency and DNS security. The website content is safe for general audiences and free from adult or questionable material.

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

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. 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 buffer.com

This scan found 19 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
57
Security headers
60
Email security
85
DNS health
80
Network security
100
GDPR outside view
83
Average
78

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

Buffer operates in the technology sector as a SaaS provider specializing in social media management. Its business model is subscription-based with free and paid tiers, serving primarily small businesses and content creators. The platform's competitive advantages include a broad integration with popular social media channels, an AI assistant for content creation, and strong collaboration features. Buffer's marketing ecosystem includes partnerships with major social networks and extensive use of advertising and analytics platforms. The company maintains a transparent and user-centric approach to privacy and consent, enhancing trust. Growth indicators include active user counts and high monthly post volumes. Strategic observations suggest Buffer is well-positioned in a competitive market with opportunities to further strengthen security policies and incident response communications.

Security posture

Buffer exhibits a mature security posture with enforced HTTPS, multiple security headers, and protection against common web vulnerabilities such as CSRF. The use of Cloudflare provides additional DDoS mitigation and WAF capabilities, though no active blocking was detected. Cookie consent is granular and compliant with GDPR, indicating strong privacy practices. However, the absence of a public security policy, incident response contact, or vulnerability disclosure program represents an area for improvement. No exposed credentials, malware, or phishing indicators were found. Overall, Buffer's security maturity is high, but transparency and formalized incident response mechanisms could be enhanced to meet enterprise-grade expectations.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS security and prevent spoofing.
  2. Publish a dedicated security policy page outlining security practices and commitments.
  3. Provide explicit security incident response contact information (e.g., security@buffer.com).
  4. Implement and publicize a vulnerability disclosure or bug bounty program to encourage responsible reporting.
  5. Regularly review third-party scripts and dependencies to ensure no vulnerable libraries are included.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Buffer
Description
Buffer provides an all-in-one social media toolkit for small businesses and individuals to create, publish, analyze, engage, and collaborate on social media content.
Key services
Social media content creation, Publishing and scheduling, Analytics and reporting, Team collaboration, Audience engagement
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Segment Analytics, Google Tag Manager, Cloudflare
Frameworks
Next.js
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • CSRF protection cookies (_csrf, csrftoken)
  • Cookie consent with opt-in/out
  • Use of Cloudflare for DDoS protection and WAF

Analytics and tracking

Services
Google Analytics, Datadog Real User Monitoring, Microsoft Clarity, Mixpanel, Segment Analytics
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Facebook Ads, Google DoubleClick, Twitter Ads, LinkedIn Ads, Microsoft Advertising, TikTok Ads, Bing Ads
Tracking pixels
Facebook Pixel, Microsoft Clarity, Mixpanel, Datadog RUM
Marketing tools
Segment Analytics, CookieYes Consent Management
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 no blocking or WAF challenges.
  2. Comprehensive cookie consent mechanism with detailed categories and opt-in/out toggles.
  3. No explicit contact emails or phone numbers found on homepage content.
  4. Strong use of modern web technologies and frameworks.
  5. Good security posture with HTTPS and security headers.
  6. No visible security vulnerabilities or exposed sensitive data.
  7. Extensive use of third-party analytics and marketing tools with clear consent.
  8. No terms of service page detected in provided content.
  9. WHOIS data supports legitimacy and long-term operation.
Technical notes

Notes

The website is built using modern JavaScript frameworks, primarily React and Next.js, ensuring server-side rendering and fast client-side interactivity. Hosting via Cloudflare provides CDN, security, and performance benefits. The site is mobile-optimized with responsive design and accessibility features. SEO is well addressed with comprehensive meta tags and Open Graph data. Analytics and marketing integrations are extensive but managed with user consent. No technical debt or deprecated technologies were detected. Performance is fast with efficient resource loading and caching strategies. Opportunities exist to further enhance DNS security and formalize security documentation.
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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