Overview
Findings
Actions
Details
Related
AI-Generated Summary
What this means
zendar.io scored 85/100, demonstrating a strong security posture. Minor improvements are noted below.
Positive signals: TLS Configuration, Known Breaches, HSTS Header all passed.
3 action items identified, including 0 critical. The issues are configuration gaps, not architectural problems. A focused remediation effort of 2–5 days could address all findings.
How zendar.io compares
Grade distribution across 2598 companies we've scanned. zendar.io scores better than 78% of them.
83
A+
25
A
190
A-
196
B+
75
B
362
B-
129
C+
114
C
330
C-
119
D+
95
D
252
D-
628
F
zendar.io — Grade B (85/100)
2598 companies scanned
Security checks
Each check inspects a different part of zendar.io's public security setup. Green means healthy, yellow needs attention, red is a problem.
DNS Configuration
Strengths: 2 nameservers configured (aitana.ns.cloudflare.com., finley.ns.cloudflare.com.); 5 MX records present; Zone transfers properly restricted. Issues: DNSSEC not configured — DNS responses can be spoofed.
DMARC / Email Security
Strengths: SPF record present with soft-fail (~all); DKIM configured (selectors: google). Issues: No DMARC record found — email spoofing is not prevented.
Certificate Hygiene
Strengths: Certificate valid, 80 days remaining; Issued by Google Trust Services. Issues: Wildcard certificate in use — broader attack surface if compromised.
Known Breaches
No known breaches found in public disclosure databases.
TLS Configuration
TLSv1.3 negotiated with TLS_AES_256_GCM_SHA384 (256-bit). Strong configuration with no deprecated protocols or weak ciphers detected.
HSTS Header
HSTS enabled: max-age=31536000. includeSubDomains present. Missing preload directive.
Security Headers
4/5 security headers present. Missing: Permissions-Policy.
CVE Exposure
Detected technologies: cloudflare. (cloudflare detected but excluded from CVE matching — upstream infrastructure). All detected technologies are upstream CDN/proxy infrastructure. No application-level software versions exposed.
Recommended actions
3 items
Steps to improve zendar.io's security grade, ranked by impact.
1
Strengthen email authentication configuration
Email authentication is partially configured for zendar.io but has gaps. Actions needed: upgrade DMARC policy from 'none' to 'quarantine' or 'reject'. Until DMARC enforcement is active, spoofed emails may still reach recipients.
Compliance impact
NIST CSFPR.AC-7
Email authentication is a required access control
How to fix this
1
Upgrade DMARC policy to p=quarantine (then p=reject after monitoring)
2
Verify with: nslookup -type=txt _dmarc.zendar.io
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2
Enable DNSSEC on your domain
Without DNSSEC, DNS responses for zendar.io can be spoofed, potentially redirecting users to malicious sites. This requires coordination with your domain registrar to publish DS records.
Compliance impact
NIST 800-53SC-20
Secure name/address resolution service
How to fix this
1
Check if your DNS provider supports DNSSEC (Cloudflare, Route53, etc.)
2
Enable DNSSEC signing in your DNS provider dashboard
3
Add the DS record to your registrar for .io TLD
4
Verify: dig +dnssec zendar.io
3
Review certificate configuration
Certificate issues found for zendar.io: wildcard certificate in use. Wildcard certificates have a broader blast radius if compromised. These are operational hygiene items, not immediate security risks.
How to fix this
1
Consider replacing wildcard cert with individual certs for critical subdomains
2
Consolidate certificate issuance to 1–2 trusted CAs
At a glance
Key data points from the scan.
TLS Version
TLSv1.3
TLSv1.3 negotiated with TLS_AES_256_GCM_SHA384 (256-bit). Strong configuration with no deprecated protocols or weak ciphers detected.
DMARC Policy
Not configured
Strengths: SPF record present with soft-fail (~all); DKIM configured (selectors: google). Issues: No DMARC record found — email spoofing is not prevented.
SPF Record
Present
v=spf1 include:_spf.google.com ~all
Security Headers
4/5 present
Missing: Permissions-Policy
HSTS
Enabled
HSTS enabled: max-age=31536000. includeSubDomains present. Missing preload directive.
SSL Certificate
Issues
Strengths: Certificate valid, 80 days remaining; Issued by Google Trust Services. Issues: Wildcard certificate in use — broader attack surface if compromised.
DNSSEC
Not enabled
Strengths: 2 nameservers configured (aitana.ns.cloudflare.com., finley.ns.cloudflare.com.); 5 MX records present; Zone transfers properly restricted. Issues: DNSSEC not configured — DNS responses can be spoofed.