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Security report for scicomm.xyz

scicomm.xyz · Technology · N/a

Medium risk. 4 critical or high findings in Email security, GDPR outside view and 1 other check.

Security score

66/100

Risk levelMedium

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

scicomm.xyz is a specialized Mastodon instance dedicated to fostering a community for scientists, researchers, science students, and communicators. It provides a decentralized social media platform that encourages sharing research, asking and answering questions, and spreading scientific knowledge within the broader Mastodon fediverse. The platform operates with manual user vetting to maintain quality and community standards, supported by donations for running costs. The website is built on the open-source Mastodon software, hosted on DigitalOcean, and uses modern web technologies including React and ES modules. The site is mobile-optimized and provides a good user experience with clear navigation and relevant content for its niche audience. Security-wise, the site enforces HTTPS and uses subresource integrity for scripts and stylesheets, but lacks DNSSEC and some security headers, which are recommended improvements. Privacy compliance is basic, with a privacy policy present but no cookie consent mechanism or terms of service found. Contact information is limited to an admin email address. Overall, the site is trustworthy and well-aligned with its community-driven mission but could enhance security and privacy practices to better comply with regulations and improve user trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
58/ 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. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  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

    • 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

  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

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

Keep watching scicomm.xyz

This scan found 17 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

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  • 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
75
Security headers
80
Email security
60
DNS health
80
Network security
40
GDPR outside view
58
Average
66

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 platform occupies a niche position within the federated social media ecosystem, targeting the scientific community and rational thinkers. Its business model is community-focused, relying on manual vetting and donations rather than commercial advertising or extensive tracking. This approach supports a trust-based environment and aligns with open-source principles. The platform's competitive advantage lies in its specialized audience and moderation policies that foster quality interactions. Growth indicators include an active user base of 237 monthly active users and ongoing registrations. The ecosystem includes links to the broader Mastodon network and related open-source projects, but no direct commercial partnerships or subsidiaries are identified. Strategic observations suggest opportunities to expand community engagement and improve compliance to attract a wider user base.

Security posture

The security posture of scicomm.xyz is moderate. The site uses HTTPS with valid SSL/TLS configuration and employs subresource integrity to protect against tampering of scripts and stylesheets. Domain registration includes standard locks to prevent unauthorized transfers or deletions. However, DNSSEC is not enabled, which could expose the domain to DNS spoofing attacks. The absence of security headers such as Content-Security-Policy and Strict-Transport-Security reduces defense-in-depth. No explicit security policy or incident response contact information is published, limiting transparency in handling security events. Privacy compliance is minimal, lacking cookie consent mechanisms and terms of service, which may pose regulatory risks. No vulnerabilities or exposed sensitive data were detected in the content. Overall, the site demonstrates good baseline security but should implement recommended enhancements to strengthen its security posture and regulatory compliance.

Recommendations

  1. Enable DNSSEC on the domain to enhance DNS security and prevent spoofing.
  2. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  3. Publish a clear terms of service and cookie policy with a consent mechanism to improve privacy compliance.
  4. Develop and publish a security policy and incident response contact information to increase transparency and trust.
  5. Regularly review and update security practices and software dependencies to mitigate vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
scicomm.xyz
Description
A decentralized social media instance aimed at scientists, researchers, science students, communicators, and enthusiasts to interact, share research, ask and answer questions, and spread scientific knowledge within the Mastodon fediverse.
Key services
Federated social media hosting, Community for science communication, User account registration with manual vetting, Moderation and community rules enforcement
Content quality
good
Branding
consistent

Technology

Stack
Mastodon 4.4.3, React, JavaScript ES Modules, DigitalOcean hosting, HTTPS with subresource integrity, CSS with integrity attributes
Frameworks
Mastodon, React
Platforms
Fediverse, Mastodon
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • Use of subresource integrity on scripts and stylesheets
  • Domain status includes clientTransferProhibited, clientUpdateProhibited, clientDeleteProhibited

Analytics and tracking

Tracking level
minimal
Privacy practices
basic

Advertising

Transparency
poor

Site quality

Design
good
User experience
good
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
moderate

Key observations

  1. Website is a Mastodon instance focused on science communication.
  2. Content is accessible and not blocked by WAF or security challenges.
  3. No cookie consent mechanism detected despite GDPR relevance.
  4. Privacy policy is present but basic; no terms of service found.
  5. Contact email provided for admin; no phone or physical address found.
  6. No security.txt or vulnerability disclosure policy detected.
  7. No advertising or tracking scripts detected.
  8. Site uses HTTPS with subresource integrity for scripts and styles.
  9. DNSSEC is not enabled, which is a security improvement opportunity.
  10. Site uses DigitalOcean hosting and standard Mastodon open-source software.
Technical notes

Notes

The website is built on Mastodon version 4.4.3, leveraging React and modern JavaScript modules, indicating a contemporary technology stack. Hosting is provided by DigitalOcean, a reputable cloud provider. The site uses HTTPS with subresource integrity for scripts and stylesheets, enhancing security. Performance is moderate with good mobile optimization and basic accessibility features. SEO optimization is basic but includes relevant meta tags and Open Graph data. No CMS is detected, as the platform is a custom Mastodon instance. The technical infrastructure supports the platform's community-driven social media functionality effectively but could benefit from improved accessibility and SEO enhancements. No major technical debt or deprecated technologies were identified.
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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