Overview
Findings
Actions
Details
Related
AI-Generated Summary
What this means
zeplin.io scored 92/100, demonstrating a strong security posture. Minor improvements are noted below.
Positive signals: Known Breaches, TLS Configuration, HSTS Header all passed.
2 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 zeplin.io compares
Grade distribution across 2378 companies we've scanned. zeplin.io scores better than 92% of them.
71
A+
22
A
180
A-
181
B+
69
B
333
B-
111
C+
111
C
295
C-
110
D+
92
D
216
D-
587
F
zeplin.io — Grade A- (92/100)
2378 companies scanned
Security checks
Each check inspects a different part of zeplin.io's public security setup. Green means healthy, yellow needs attention, red is a problem.
DNS Configuration
Strengths: 4 nameservers configured (ns-1894.awsdns-44.co.uk., ns-65.awsdns-08.com., ns-918.awsdns-50.net., ns-1250.awsdns-28.org.); 5 MX records present; Zone transfers properly restricted. Issues: DNSSEC not configured — DNS responses can be spoofed.
Certificate Hygiene
Strengths: Certificate valid, 70 days remaining; Issued by Amazon. Issues: Wildcard certificate in use — broader attack surface if compromised.
TLS Configuration
TLSv1.3 negotiated with TLS_AES_128_GCM_SHA256 (128-bit). Strong configuration with no deprecated protocols or weak ciphers detected.
HSTS Header
HSTS enabled: max-age=31536000 with includeSubDomains and preload. Meets best-practice configuration.
Security Headers
4/5 security headers present. Missing: Permissions-Policy.
DMARC / Email Security
Strengths: DMARC policy set to quarantine; SPF record present with hard-fail (-all); DKIM configured (selectors: google, s1, s2, k1).
Known Breaches
No known breaches found in public disclosure databases.
CVE Exposure
Detected technologies: nginx. No version information exposed — CVE matching not possible (this is good practice).
Recommended actions
2 items
Steps to improve zeplin.io's security grade, ranked by impact.
1
Enable DNSSEC on your domain
Without DNSSEC, DNS responses for zeplin.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 zeplin.io
See all recommendations
Enter your work email to unlock the full action plan.
No spam. We only send security-related updates.
Report unlocked.
2
Review certificate configuration
Certificate issues found for zeplin.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_128_GCM_SHA256 (128-bit). Strong configuration with no deprecated protocols or weak ciphers detected.
DMARC Policy
p=quarantine
Strengths: DMARC policy set to quarantine; SPF record present with hard-fail (-all); DKIM configured (selectors: google, s1, s2, k1).
SPF Record
Present
v=spf1 include:_spf.google.com include:20002031.spf01.hubspotemail.net include:spf.mtasv.net include
Security Headers
4/5 present
Missing: Permissions-Policy
HSTS
Enabled
HSTS enabled: max-age=31536000 with includeSubDomains and preload. Meets best-practice configuration.
SSL Certificate
Issues
Strengths: Certificate valid, 70 days remaining; Issued by Amazon. Issues: Wildcard certificate in use — broader attack surface if compromised.
DNSSEC
Not enabled
Strengths: 4 nameservers configured (ns-1894.awsdns-44.co.uk., ns-65.awsdns-08.com., ns-918.awsdns-50.net., ns-1250.awsdns-28.org.); 5 MX records present; Zone transfers properly restricted. Issues: DNSSEC not configured — DNS responses can be spoofed.