Is tarsnap.com Safe? Security Analysis for Tarsnap
https://tarsnap.comCheck if tarsnap.com is a scam or legitimate. Free security scan and reviews.
Below Technology avg (72)
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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
Tarsnap is a specialized online backup service targeting security-conscious users who operate UNIX-like systems. The company emphasizes client-side encryption, data deduplication, and transparency through open source client software. Their business model is prepaid and usage-based, charging customers only for storage and bandwidth consumed. The website content is professional and focused on technical details, with clear explanations of service benefits and recent software updates. Technically, the website is simple and efficient, using standard HTML5 and CSS without heavy frameworks or analytics scripts. The site is fast and has basic mobile optimization, though accessibility features could be improved. No CMS or hosting provider details are evident. The lack of privacy and cookie policies, as well as absence of contact information, are notable gaps. Security-wise, Tarsnap demonstrates strong principles by enforcing client-side encryption and providing open source code for auditability. A bug bounty program is present, indicating proactive vulnerability management. However, the absence of security headers and unclear SSL configuration are areas for improvement. The missing WHOIS data reduces domain trust but does not contradict the professional nature of the site. Overall, Tarsnap presents a trustworthy and technically sound service for a niche market. Strategic improvements in privacy compliance, contact transparency, and security headers would enhance their security posture and user trust.
Detected Technologies
12 urgent findings need attention
12 high
- + 4 more findings in the full report below
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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
8 findings
15/100
GDPR Compliance
3 findings
50/100
NIS2 Compliance
6 findings
28/100
Email Security
6 findings
60/100
🧠AI Business Intelligence
Technology stack, business insights, and market analysis powered by AI.
Business Intelligence
Market & Strategic Analysis
Tarsnap occupies a niche market focused on secure online backups for UNIX-like systems, appealing to technically savvy and security-conscious users. Their competitive advantage lies in strong encryption, open source transparency, and efficient deduplication technology. The prepaid, usage-based pricing model aligns well with cost-conscious customers who want to pay only for what they use. The company maintains a clear focus on security and technical excellence, supported by an active changelog and bug bounty program. However, the lack of visible company registration data and contact information may limit broader market trust. The absence of marketing or advertising tools suggests a reliance on organic growth and reputation within the security community.
Security Posture Analysis
Comprehensive Security Assessment
Tarsnap demonstrates a mature security posture through client-side encryption, open source client software, and a bug bounty program. These practices reduce risks related to data breaches and unauthorized access. However, the website lacks visible security headers and explicit privacy or cookie policies, which are important for compliance and user trust. The missing WHOIS data is a concern for domain legitimacy verification. No vulnerabilities or exposed sensitive data were detected in the website content. Incident response contact information is not provided, which could delay handling of security issues. Overall, the security posture is strong in product design but could improve in web presence and compliance transparency.
Strategic Recommendations
Priority Actions for Security Improvement
Publish comprehensive privacy and cookie policies to improve GDPR compliance and user trust.
✨Observations
AI-powered comprehensive website and business analysis.
AI-Enhanced Website Analysis
Business Insights
Tarsnap
Tarsnap is a secure online backup service for UNIX-like operating systems that emphasizes encryption, deduplication, and client-side security.
good
consistent
Technical Stack
fast
basic
basic
good
Security Assessment
- Client-side encryption
- Open source client code for auditability
- Bug bounty program
Analytics & Tracking
Advertising & Marketing
Website Quality Assessment
Key Observations
Website is fully accessible with no blocking or WAF challenges.
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🛡️Security Headers
HTTP security headers analysis and recommendations.
Security Headers
HTTP security headers analysis
Missing Strict-Transport-Security header
HIGHForces HTTPS connections
Missing X-Frame-Options header
HIGHPrevents clickjacking attacks
Missing X-Content-Type-Options header
MEDIUMPrevents MIME type sniffing
Missing Content-Security-Policy header
HIGHControls resources the browser is allowed to load
Missing X-XSS-Protection header
MEDIUMLegacy XSS protection (deprecated but still recommended)
Missing Referrer-Policy header
LOWControls referrer information sent with requests
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 Privacy Policy found
HIGHGDPR requires a clear and accessible privacy policy
No Cookie Policy found
HIGHGDPR requires clear information about cookie usage
No Cookie Consent Banner found
HIGHGDPR requires explicit consent for non-essential cookies
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 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 security contact information
HIGHNIS2 requires clear incident reporting channels
No NIS2 reference found
LOWConsider explicitly mentioning NIS2 compliance efforts
Critical sector without clear security compliance
HIGHDetected sectors: transport, digital
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📧Email Security
SPF, DKIM, and DMARC validation and email security assessment.
Email Security
SPF, DKIM, and DMARC validation
DMARC not enforcing
MEDIUMDMARC policy is set to "none"
No DKIM record found
MEDIUMDKIM adds cryptographic signatures to emails
Strict DMARC Alignment
LOWStrict alignment may cause legitimate emails to fail
No BIMI Record
LOWBIMI displays brand logos in email clients
No MTA-STS Policy
MEDIUMMTA-STS enforces TLS for email delivery
No TLS-RPT Record
LOWTLS-RPT provides reporting for email TLS issues
SPF Details
DMARC Details
🏆SSL/TLS Security
Certificate validity and encryption analysis.
SSL/TLS Security
Certificate validity and encryption analysis
SSL Certificate Expires Within 90 Days
MEDIUMSSL certificate expires in 72 days
Weak SSL Key Length
HIGHSSL certificate uses 256-bit key, which is considered weak
Partial SSL/TLS Assessment
LOWCompleted 2 of 4 security checks due to time constraints
Certificate Details
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
Domain Delete Lock Not Enabled
LOWDomain can be deleted without additional verification
DMARC Policy Set to None
LOWDMARC is configured but not enforcing any policy
Domain Registration Details
DNS Records
DNSSEC Status
SPF Analysis
⚡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 tarsnap.com compare?
See how tarsnap.com stacks up against similar websites in the same industry.
🔧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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