Overview
Findings
Actions
Details
Related
AI-Generated Summary
What this means
classdojo.com scored 85/100, demonstrating a strong security posture. Minor improvements are noted below.
Critical gaps in: Security Headers. Positive signals: Known Breaches, TLS Configuration, DNS Configuration 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 classdojo.com compares
Grade distribution across 2378 companies we've scanned. classdojo.com scores better than 78% 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
classdojo.com — Grade B (85/100)
2378 companies scanned
Security checks
Each check inspects a different part of classdojo.com's public security setup. Green means healthy, yellow needs attention, red is a problem.
Security Headers
Only 1/5 security headers present. Missing: CSP, X-Content-Type-Options, Referrer-Policy, Permissions-Policy. This exposes the application to clickjacking, MIME-sniffing, and other client-side attacks.
Certificate Hygiene
Strengths: Certificate valid, 121 days remaining; Issued by Amazon. 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_128_GCM_SHA256 (128-bit). Strong configuration with no deprecated protocols or weak ciphers detected.
DNS Configuration
Strengths: 4 nameservers configured (ns-1734.awsdns-24.co.uk., ns-25.awsdns-03.com., ns-938.awsdns-53.net., ns-1347.awsdns-40.org.); 5 MX records present; DNSSEC enabled; Zone transfers properly restricted.
DMARC / Email Security
Strengths: DMARC policy set to reject (strongest); SPF record present with hard-fail (-all); DKIM configured (selectors: google, s1, s2, mandrill, zendesk1, zendesk2, smtpapi).
HSTS Header
HSTS enabled: max-age=31536000 with includeSubDomains and preload. Meets best-practice configuration.
CVE Exposure
Detected technologies: AmazonS3, Proxy/CDN, Gatsby/5.15.0. (Proxy/CDN detected but excluded from CVE matching — upstream infrastructure). No high or critical CVEs found for detected versions.
Recommended actions
2 items
Steps to improve classdojo.com's security grade, ranked by impact.
1
Add missing security headers (CSP, X-Content-Type-Options, Referrer-Policy, Permissions-Policy)
4 of 5 recommended security headers are missing on classdojo.com: CSP, X-Content-Type-Options, Referrer-Policy, Permissions-Policy. These headers protect against clickjacking, MIME-sniffing, and unauthorized browser feature access. Adding them is a server configuration change with no application code changes required.
Compliance impact
PCI-DSS 4.0Req 6.4.1
Security headers are required application controls
OWASPSecure Headers
Recommended baseline for web applications
How to fix this
1
Add Content-Security-Policy header (start with report-only to avoid breakage)
2
Add: X-Content-Type-Options: nosniff
3
Add: Referrer-Policy: strict-origin-when-cross-origin
4
Add: Permissions-Policy: camera=(), microphone=(), geolocation=()
5
Verify with: curl -sI https://classdojo.com | grep -iE 'content-security|x-frame|x-content|referrer|permissions'
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2
Review certificate configuration
Certificate issues found for classdojo.com: 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=reject
Strengths: DMARC policy set to reject (strongest); SPF record present with hard-fail (-all); DKIM configured (selectors: google, s1, s2, mandrill, zendesk1, zendesk2, smtpapi).
SPF Record
Present
v=spf1 a ip4:167.89.8.27 ip4:54.240.30.149 ip4:54.240.30.150 ip4:167.89.13.39 ip4:168.245.22.255 ip4
Security Headers
1/5 present
Missing: CSP, X-Content-Type-Options, Referrer-Policy, Permissions-Policy
HSTS
Enabled
HSTS enabled: max-age=31536000 with includeSubDomains and preload. Meets best-practice configuration.
SSL Certificate
Issues
Strengths: Certificate valid, 121 days remaining; Issued by Amazon. Issues: Wildcard certificate in use — broader attack surface if compromised.
DNSSEC
Enabled
Strengths: 4 nameservers configured (ns-1734.awsdns-24.co.uk., ns-25.awsdns-03.com., ns-938.awsdns-53.net., ns-1347.awsdns-40.org.); 5 MX records present; DNSSEC enabled; Zone transfers properly restricted.