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Security report for simplelogin.co

Proton AG · Technology · Switzerland

Low risk. 4 critical or high findings in GDPR outside view.

Security score

82/100

Risk levelLow

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

SimpleLogin is a privacy-focused technology company offering an open source email alias service that enables users to protect their inboxes from spam and phishing by using anonymous email aliases. The company operates under Proton AG, a reputable Swiss privacy-centric organization, and targets privacy-conscious users seeking enhanced email anonymity. The website demonstrates strong branding, excellent content quality, and a comprehensive feature set including browser extensions and mobile apps. Technically, the site uses modern web technologies and is hosted on privacy-respecting infrastructure. However, the scanned domain lacks a valid SSL certificate and HTTPS enforcement, which is a critical security gap. The security posture is otherwise solid with SPF and DMARC configured, but improvements are needed in SSL/TLS configuration and security headers. Privacy compliance is good with a clear privacy policy and GDPR alignment, though cookie consent mechanisms are absent. Overall, the business credibility is high with transparent WHOIS data and strong domain protection. Strategic recommendations include immediate SSL certificate deployment, enabling HSTS, and adding cookie consent to enhance security and compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
25/ 100 · Critical
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. 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

    • High

      Third-party services without privacy policy

      Detected services: Facebook, Twitter, LinkedIn, YouTube

      What to do: Document all third-party data sharing in your privacy policy

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

Keep watching simplelogin.co

This scan found 12 issues across 5 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
100
Security headers
80
Email security
98
DNS health
90
Network security
100
GDPR outside view
25
Average
82

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

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 simplelogin.co, from OffSeq Breach.

Total records
3,238
Employees
0
Customers
40
Third parties
3,198
Weak passwords
11%

6 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for simplelogin.co.

Select it in the checkout above.

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

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

Business context

Business profile

SimpleLogin holds a strong niche position in the privacy and email alias market, leveraging its open source model and Proton AG backing to build trust and credibility. Its subscription-based business model ensures ad-free user experience and sustainable revenue. The company targets individual users concerned about online privacy and spam, offering multi-platform support and custom domain features. The integration with Proton AG and transparent domain registration reinforce legitimacy. The active GitHub presence and community engagement via forums and social media indicate a healthy ecosystem and growth potential. The company’s focus on privacy and security aligns well with current market trends and regulatory requirements.

Security posture

The current security posture shows a mix of strengths and weaknesses. SPF and DMARC records are properly configured, reducing email spoofing risks. The domain is protected against subdomain takeover. However, the absence of a valid SSL certificate on the scanned domain and lack of HTTPS severely undermine transport security and user trust. Missing HSTS and modern TLS protocols further weaken defenses. No advanced security headers or session resumption mechanisms are implemented. Incident response contacts are available, but no formal vulnerability disclosure or security.txt file is found. Overall, the security maturity is moderate but requires urgent improvements in SSL/TLS deployment and header configurations to meet best practices and regulatory expectations.

Recommendations

  1. Deploy and maintain a valid SSL/TLS certificate on all domains to enable HTTPS and protect user data in transit.
  2. Enable HTTP Strict Transport Security (HSTS) with includeSubDomains and preload to enforce secure connections.
  3. Upgrade TLS protocols to support TLS 1.2 and TLS 1.3 and disable deprecated versions.
  4. Implement security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to mitigate common web attacks.
  5. Add a cookie consent banner or mechanism to comply with privacy regulations and inform users about cookie usage.

Contact details published on the site

Legal name
Proton AG
Registration number
CHE-354.686.492
Technical notes

Notes

The website is built using the Hugo static site generator, leveraging modern frontend libraries including jQuery, Bootstrap, Vue.js, and FontAwesome for UI components and interactivity. It supports multiple platforms including web, browser extensions, and mobile apps. Hosting is provided by Proton AG and UpCloud, ensuring privacy-respecting infrastructure. Performance is moderate with a page load time of approximately 4.3 seconds and a moderate number of resources. SEO is enhanced by comprehensive meta tags and structured JSON-LD data. Accessibility and mobile optimization are good, with responsive design and clear navigation. Technical debt is low, but the lack of SSL/TLS on the scanned domain is a critical risk. Modernization opportunities include improving SSL configuration and adding security headers to enhance resilience and compliance.
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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