Overview
Findings
Actions
Details
Related
A+
98 / 100

assembly.com

Security report · Scanned February 18, 2026

Checks
8
Passed
7
Warnings
1
Critical
0
AI-Generated Summary
What this means

assembly.com scored 98/100, demonstrating a strong security posture. Minor improvements are noted below.

Positive signals: TLS Configuration, Known Breaches, HSTS Header all passed.

1 action item 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 assembly.com compares

Grade distribution across 2378 companies we've scanned. assembly.com scores better than 97% of them.

97th percentile
0 Percentile rank 100
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
assembly.com — Grade A+ (98/100) 2378 companies scanned
Security checks

Each check inspects a different part of assembly.com's public security setup. Green means healthy, yellow needs attention, red is a problem.

DNS Configuration
Strengths: 4 nameservers configured (ns-27.awsdns-03.com., ns-851.awsdns-42.net., ns-1295.awsdns-33.org., ns-1618.awsdns-10.co.uk.); 1 MX records present; Zone transfers properly restricted. Issues: DNSSEC not configured — DNS responses can be spoofed.
Needs work
TLS Configuration
TLSv1.3 negotiated with TLS_AES_128_GCM_SHA256 (128-bit). Strong configuration with no deprecated protocols or weak ciphers detected.
Healthy
DMARC / Email Security
Strengths: DMARC policy set to quarantine; SPF record present with soft-fail (~all); DKIM configured (selectors: google).
Healthy
Known Breaches
No known breaches found in public disclosure databases.
Healthy
HSTS Header
HSTS enabled: max-age=63072000. Missing includeSubDomains. Missing preload directive.
Healthy
Security Headers
4/5 security headers present. Missing: Permissions-Policy.
Healthy
CVE Exposure
Detected technologies: Vercel, Next.js. (Vercel detected but excluded from CVE matching — upstream infrastructure). No version information exposed — CVE matching not possible (this is good practice).
Healthy
Certificate Hygiene
Strengths: Certificate valid, 68 days remaining; Issued by Let's Encrypt.
Healthy
Recommended actions
1 item

Steps to improve assembly.com's security grade, ranked by impact.

1
Enable DNSSEC on your domain
Impact: 1–3 Days (Depends On Registrar)
MEDIUM
Without DNSSEC, DNS responses for assembly.com 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 .com TLD
4
Verify: dig +dnssec assembly.com
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 soft-fail (~all); DKIM configured (selectors: google).
SPF Record
Present
v=spf1 include:_spf.google.com include:amazonses.com ~all
Security Headers
4/5 present
Missing: Permissions-Policy
HSTS
Enabled
HSTS enabled: max-age=63072000. Missing includeSubDomains. Missing preload directive.
SSL Certificate
Valid
Strengths: Certificate valid, 68 days remaining; Issued by Let's Encrypt.
DNSSEC
Not enabled
Strengths: 4 nameservers configured (ns-27.awsdns-03.com., ns-851.awsdns-42.net., ns-1295.awsdns-33.org., ns-1618.awsdns-10.co.uk.); 1 MX records present; Zone transfers properly restricted. Issues: DNSSEC not configured — DNS responses can be spoofed.