Is protonmail.ch Safe? Security Analysis for Proton AG
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SEQ SIA
Lastadijas 12 k-3, Riga, Latvia, LV-1050
Reg. No. 40203410806 • VAT LV40203410806
Support: guard@offseq.com • +371 2256 5353
AI Summary
Proton AG operates Proton Mail, the world’s largest secure email service with over 100 million users. The company offers a suite of privacy-focused services including encrypted email, calendar, cloud storage, password manager, VPN, and Bitcoin wallet. Proton AG is headquartered in Switzerland and emphasizes privacy by default, leveraging Swiss privacy laws to protect user data. The business model is subscription-based with a freemium offering supported by paid plans. The website is professionally designed, mobile-optimized, and rich in content, targeting privacy-conscious individuals and businesses globally. Technically, the site uses modern frameworks such as Astro and React, and supports multiple platforms including web, desktop, and mobile apps. However, the site currently lacks a valid SSL certificate and security headers, which are critical for secure communications. Privacy compliance is strong with a comprehensive privacy policy and GDPR adherence, though no cookie consent mechanism was detected. Overall, Proton Mail demonstrates a high level of business credibility and trustworthiness, supported by consistent WHOIS data and community engagement.
Detected Technologies
7 urgent findings need attention
7 high
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Guard tracks your live infrastructure daily: certificate expiry, DNS & mail authentication drift, uptime changes, subdomain inventory, and unexpected tracker or content shifts. A full timeline captures every diff so you can prove remediation and spot regressions instantly.
Security drift alerts
Risk score drops, new high-severity issues, and header hardening gaps
Compliance watch
GDPR / NIS2 posture changes with governance evidence snapshots
Infrastructure surface
Unexpected open services, SSL expiry, DNS & email authentication changes
Content & tracker intelligence
Marketing tech shifts, analytics drift, and AI recommendation updates
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Security Headers
4 findings
65/100
GDPR Compliance
5 findings
43/100
NIS2 Compliance
7 findings
25/100
Email Security
3 findings
80/100
🧠AI Business Intelligence
Technology stack, business insights, and market analysis powered by AI.
Business Intelligence
Market & Strategic Analysis
Proton AG holds a strong market position as a leading provider of encrypted email and privacy services. Its competitive advantage lies in its open-source approach, independent security audits, and Swiss jurisdiction. Revenue is primarily generated through paid subscriptions, with a large free user base supporting brand growth and community trust. The company targets individuals, activists, journalists, and businesses requiring secure communications. Proton AG maintains partnerships within its ecosystem, including Proton VPN and its merchandise store. The company’s operations reflect a commitment to privacy advocacy and community involvement, positioning it well for continued growth in the privacy-focused technology sector.
Extracted Contact Information
Marketing Intelligence Data
Physical Addresses (1)
Security Posture Analysis
Comprehensive Security Assessment
The security posture of the Proton Mail website shows strengths in encryption and privacy principles but has notable technical weaknesses. The absence of a valid SSL certificate is a critical vulnerability that undermines HTTPS security, potentially exposing users to man-in-the-middle attacks. The lack of security headers such as HSTS and CSP further reduces protection against common web threats. No known SSL vulnerabilities or outdated protocols were detected, and the site avoids vulnerable libraries. Incident response and security policy documentation are not explicitly found on the site, which could be improved to enhance transparency and readiness. Overall, while Proton Mail’s service architecture is secure, the website’s security implementation requires urgent improvements to align with best practices.
Strategic Recommendations
Priority Actions for Security Improvement
Immediately obtain and deploy a valid SSL/TLS certificate to enable HTTPS and protect user data in transit.
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🛡️Security Headers
HTTP security headers analysis and recommendations.
Security Headers
HTTP security headers analysis
Missing X-Frame-Options header
HIGHPrevents clickjacking attacks
Weak X-XSS-Protection configuration
LOWCurrent value: "0"
Missing Permissions-Policy header
MEDIUMControls browser features and APIs
Sensitive data may be cached
LOWCache-Control header should include "no-store" for sensitive pages
👤GDPR Compliance
Privacy and data protection assessment under GDPR regulations.
GDPR Compliance
Privacy and data protection assessment
No Cookie Policy found
HIGHGDPR requires clear information about cookie usage
No Cookie Consent Banner found
HIGHGDPR requires explicit consent for non-essential cookies
Insufficient contact information
MEDIUMGDPR requires organizations to provide clear contact details
No Data Protection Officer mentioned
LOWLarge organizations may need to designate a DPO under GDPR
Privacy policy may not be GDPR compliant
MEDIUMPrivacy policy lacks explicit GDPR compliance elements
GDPR Compliance Analysis
🛡️NIS2 Compliance
Network & Information Security Directive compliance assessment.
NIS2 Compliance
Network & Information Security Directive
No information security framework found
HIGHNIS2 requires documented cybersecurity and information security measures
No vulnerability disclosure policy
MEDIUMNIS2 encourages coordinated vulnerability disclosure
No security policy documentation found
HIGHNIS2 requires documented cybersecurity governance and risk management
No incident response procedures found
HIGHNIS2 requires documented incident response and business continuity plans
No business continuity planning found
MEDIUMNIS2 emphasizes operational resilience and business continuity
No security contact information
HIGHNIS2 requires clear incident reporting channels
No NIS2 reference found
LOWConsider explicitly mentioning NIS2 compliance efforts
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📧Email Security
SPF, DKIM, and DMARC validation and email security assessment.
Email Security
SPF, DKIM, and DMARC validation
No DMARC reporting
LOWDMARC aggregate reports not configured
No DKIM record found
MEDIUMDKIM adds cryptographic signatures to emails
Strict DMARC Alignment
LOWStrict alignment may cause legitimate emails to fail
SPF Details
DMARC Details
MTA-STS Details
🏆SSL/TLS Security
Certificate validity and encryption analysis.
SSL/TLS Security
Certificate validity and encryption analysis
OCSP Status
📊DNS Health
DNS configuration and security assessment.
DNS Health
DNS configuration and security assessment
DNSSEC Not Enabled
MEDIUMDNSSEC is not configured for this domain
DNS Records
DNSSEC Status
⚡Network Security
Port scanning and network exposure analysis.
Network Security
Port scanning and network exposure analysis
Good Network Security Posture
LOWNo unnecessary services detected on common risky ports
How does protonmail.ch compare?
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🔧Technical Analysis
Detailed technical findings and analysis from AI assessment.
Technical Analysis
Comprehensive security assessment findings
Additional Findings
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Marketing Intelligence
Contact emails, phone numbers & warm leads
Plan Comparison
| Feature | PDF Report | Marketing+ |
|---|---|---|
| Full security analysis | ||
| Professional PDF export | ||
| Email delivery | ||
| Lifetime access + unlock code | ||
| Contact emails & phones | — | |
| Marketing outreach data | — |
Already purchased?
Order summary
Digital reports are delivered immediately after payment. By continuing you acknowledge the withdrawal waiver described in our Returns & Refunds policy.
Secure payments processed via EveryPay. Prices in EUR; Incl. 21% VAT.
SEQ SIA
Lastadijas 12 k-3, Riga, Latvia, LV-1050
Reg. No. 40203410806 • VAT LV40203410806
Support: guard@offseq.com • +371 2256 5353
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