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Is er.cz a Scam? Security Check Results - Tomáš Martínek Reviews

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Is er.cz Safe? Security Analysis for Tomáš Martínek

Check if er.cz is a scam or legitimate. Free security scan and reviews.

TechnologyCzech Republicsmall
HTMLCSSJavaScriptMatomo analytics
Analyzed 8/1/2025Completed 4:24:48 AM
52
Security Score
MEDIUM RISK

AI Summary

ER.cz is a small Czech-based service providing free third-level domain redirection under the er.cz domain. The service targets Czech internet users who want to simplify or mask their website URLs by offering free domain aliases, email aliases, and visitor statistics. The business appears to be operated by Tomáš Martínek since at least 2004, positioning itself as a niche provider in the Czech internet domain redirection market. The website content is primarily in Czech and offers basic navigation and support features including a discussion forum and FAQ. Technically, the site uses standard HTML, CSS, and JavaScript with Matomo analytics for visitor tracking, but lacks modern security features such as HTTPS enforcement and security headers. The absence of WHOIS data is typical for .cz domains but limits independent verification of domain ownership and age. Contact information is limited to an email address and a contact page, with no phone numbers or social media presence. Overall, the site serves a specialized function with modest technical sophistication and limited security and privacy compliance.

Detected Technologies

HTMLCSSJavaScriptMatomo analytics

🧠AI Business Intelligence

Technology stack, business insights, and market analysis powered by AI.

Business Intelligence

Market & Strategic Analysis

The business operates in the technology sector, specifically in domain redirection and internet services. Its competitive advantage lies in offering free domain redirection with additional features like email aliases and statistics, which are uncommon to be provided free of charge. The business model relies on free service offerings possibly monetized through advertising partnerships, as evidenced by ad placements from wedosas.net and toplist.cz. The target customers are Czech internet users needing simple domain redirection solutions. The company maintains partnerships with Czech internet marketing and catalog sites, enhancing its ecosystem. Growth indicators are limited but the long operational history since 2004 suggests stable niche presence. The lack of modern web design and security features may limit broader market appeal.

Extracted Contact Information

Marketing Intelligence Data

Email Addresses (1)

i*****@er.cz

Security Posture Analysis

Comprehensive Security Assessment

The security posture of ER.cz is basic and requires significant improvement. The website does not enforce HTTPS, lacks security headers, and does not publish privacy or cookie policies, which are critical for GDPR compliance and user trust. The login form uses POST but lacks visible advanced protections such as CSRF tokens or multi-factor authentication. No incident response or vulnerability disclosure policies are published. While no explicit vulnerabilities or malware were detected in the HTML content, the absence of modern security best practices exposes the site to potential risks. The use of Matomo analytics with disabled cookies is a positive privacy consideration but insufficient to offset other security gaps. Overall, the site scores low on security maturity and should prioritize implementing HTTPS, security headers, and privacy compliance measures.

Strategic Recommendations

Priority Actions for Security Improvement

1

Implement HTTPS with a valid SSL/TLS certificate and enforce secure connections site-wide.

Observations

AI-powered comprehensive website and business analysis.

AI-Enhanced Website Analysis

Business Insights

Company:

Tomáš Martínek

Description:

Nejkvalitnější přesměrování pro Váš web, které můžete získat zdarma! Kromě samotného přesměrování 3. řádu (dvoupísmené domény er.cz), vám nabízíme také e-mailový alias, statistiky, velké možnosti nastavení, rozsáhlou nápovědu, soutěže a další věci, které Vám zdarma nikdo jiný nenabídne!

Key Services:
free third-level domain redirection (*.er.cz)email aliasstatisticscustomizable settingshelp and supportdiscussion forum
Content Quality:

basic

Branding:

moderate

Technical Stack

Technologies:
HTMLCSSJavaScriptMatomo analytics
Performance:

moderate

Mobile:

poor

Accessibility:

basic

SEO:

basic

Security Assessment

Security Score:
40/100
Best Practices:
  • No exposed sensitive data in HTML
  • Login form uses POST method

Analytics & Tracking

Services:
Matomo
Tracking Level:moderate
Privacy Compliance:poor

Advertising & Marketing

Ad Networks:
wedosas.net
Tracking Pixels:
toplist.cz
Marketing Tools:
Matomo analytics
Transparency Level:basic

Website Quality Assessment

Design Quality:basic
User Experience:basic
Content Relevance:good
Navigation Clarity:basic
Professionalism:basic
Trustworthiness:moderate

Key Observations

1

Website provides free third-level domain redirection service for Czech users.

🛡️Security Headers

HTTP security headers analysis and recommendations.

Security Headers

HTTP security headers analysis

15/100
Score

Missing Strict-Transport-Security header

HIGH

Forces HTTPS connections

Missing X-Frame-Options header

HIGH

Prevents clickjacking attacks

Missing X-Content-Type-Options header

MEDIUM

Prevents MIME type sniffing

Missing Content-Security-Policy header

HIGH

Controls resources the browser is allowed to load

Missing X-XSS-Protection header

MEDIUM

Legacy XSS protection (deprecated but still recommended)

Missing Referrer-Policy header

LOW

Controls referrer information sent with requests

Missing Permissions-Policy header

MEDIUM

Controls browser features and APIs

Sensitive data may be cached

LOW

Cache-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

25/100
Score

No Privacy Policy found

HIGH

GDPR requires a clear and accessible privacy policy

No Cookie Policy found

HIGH

GDPR requires clear information about cookie usage

No Cookie Consent Banner found

HIGH

GDPR requires explicit consent for non-essential cookies

EU business without adequate privacy measures

CRITICAL

EU businesses are subject to strict GDPR requirements

GDPR Compliance Analysis

Privacy Policy0% confidence
Cookie Policy0% confidence
Contact Information Found90% confidence
emailphone

🛡️NIS2 Compliance

Network & Information Security Directive compliance assessment.

NIS2 Compliance

Network & Information Security Directive

17/100
Score

No information security framework found

HIGH

NIS2 requires documented cybersecurity and information security measures

No vulnerability disclosure policy

MEDIUM

NIS2 encourages coordinated vulnerability disclosure

No security policy documentation found

HIGH

NIS2 requires documented cybersecurity governance and risk management

No incident response procedures found

HIGH

NIS2 requires documented incident response and business continuity plans

No business continuity planning found

MEDIUM

NIS2 emphasizes operational resilience and business continuity

No security contact information

HIGH

NIS2 requires clear incident reporting channels

No vulnerability reporting mechanism

MEDIUM

Clear vulnerability reporting supports coordinated disclosure

No NIS2 reference found

LOW

Consider explicitly mentioning NIS2 compliance efforts

📧Email Security

SPF, DKIM, and DMARC validation and email security assessment.

Email Security

SPF, DKIM, and DMARC validation

70/100
Score

No DKIM record found

MEDIUM

DKIM adds cryptographic signatures to emails

No BIMI Record

LOW

BIMI displays brand logos in email clients

No MTA-STS Policy

MEDIUM

MTA-STS enforces TLS for email delivery

No TLS-RPT Record

LOW

TLS-RPT provides reporting for email TLS issues

SPF
Sender Policy Framework
DKIM
DomainKeys Identified Mail
DMARC
Domain-based Message Authentication
MX Records
Mail Exchange Records
BIMI
Brand Indicators
MTA-STS
Mail Transfer Agent Security
TLS-RPT
TLS Reporting
DNSSEC
DNS Security
SPF Details
Record:
v=spf1 a mx ip4:46.28.106.159 ip4:89.221.213.102 ip4:89.221.213.101 ip4:185.82.213.38 ip4:77.78.104.0/24 ip4:185.28.192.0/22 ip4:185.28.193.0/24 include:_spf.we.wedos.net include:spf.seznam.cz ~all
DNS Lookups:4/10
Policy:~all

🏆SSL/TLS Security

Certificate validity and encryption analysis.

SSL/TLS Security

Certificate validity and encryption analysis

52/100
Score

Weak Protocols Supported

HIGH

Server supports weak protocols: TLSv1.1

OCSP Stapling Not Enabled

LOW

OCSP stapling improves performance and privacy

Certificate Transparency Not Implemented

LOW

Certificate is not logged in Certificate Transparency logs

SSL Certificate Expires Soon

HIGH

SSL certificate expires in 19 days

Mixed Content Detected

MEDIUM

21 resources loaded over insecure HTTP

Partial SSL/TLS Assessment

LOW

Completed 3 of 4 security checks due to time constraints

Protocol Support

TLSv1.3TLSv1.2TLSv1.1

OCSP Status

OCSP Stapling Disabled

📊DNS Health

DNS configuration and security assessment.

DNS Health

DNS configuration and security assessment

75/100
Score

DNSSEC Not Enabled

MEDIUM

DNSSEC is not configured for this domain

CAA Records Not Configured

LOW

Certificate Authority Authorization (CAA) records not found

No DMARC Record

MEDIUM

DMARC policy not configured

Domain Registration Details

Domain Age
21 years(mature)

DNS Records

A Records:45.138.107.19, 45.138.107.20
Name Servers:
ns.wedos.com
ns.wedos.czDNS only
ns.wedos.eu
ns.wedos.net
MX Records:
10: d1f74436139ae32d.mx2.emailprofi.seznam.cz
20: d1f74436139ae32d.mx1.emailprofi.seznam.cz
SOA:Serial: 2025072702, TTL: 3600s

DNSSEC Status

DNSSEC Not Enabled

DNS Performance

Resolution Time:186ms

SPF Analysis

SPF Record:
v=spf1 a mx ip4:46.28.106.159 ip4:89.221.213.102 ip4:89.221.213.101 ip4:185.82.213.38 ip4:77.78.104.0/24 ip4:185.28.192.0/22 ip4:185.28.193.0/24 include:_spf.we.wedos.net include:spf.seznam.cz ~all

Network Security

Port scanning and network exposure analysis.

Network Security

Port scanning and network exposure analysis

100/100
Score

Good Network Security Posture

LOW

No unnecessary services detected on common risky ports

🔧Technical Analysis

Detailed technical findings and analysis from AI assessment.

Technical Analysis

Comprehensive security assessment findings

Additional Findings

The website is built using traditional HTML, CSS, and JavaScript without modern frameworks or CMS platforms. It uses Matomo analytics for visitor tracking with cookies disabled, indicating some privacy awareness. The site performance is moderate but lacks mobile optimization and accessibility features. The design is dated and navigation is basic but functional. Advertising is integrated via wedosas.net and toplist.cz tracking pixels. No hosting provider or CMS is identified from the content. The site would benefit from modernization including responsive design, accessibility improvements, and SEO enhancements. Technical debt is evident in the lack of HTTPS and security headers, which pose operational risks. Overall, the technical infrastructure supports the niche service but requires updates to meet current web standards and security expectations.
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