88
linear.app
Findings
5
·
3
·
0
Checks
8 passive
Executive Summary
AI-GENERATED
linear.app scored 88/100, demonstrating a strong security posture. Minor improvements are noted below.
Positive signals: TLS Configuration, DMARC / Email Security, Known Breaches 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.
Action Items
Ordered by priority · 3 items
1
Enable DNSSEC on your domain
Without DNSSEC, DNS responses for linear.app 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
Remediation Steps
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 .app TLD
4
Verify: dig +dnssec linear.app
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2
Increase HSTS max-age duration
HSTS is enabled but the max-age (0s) is below the recommended minimum of 15768000s (6 months). A short max-age means browsers forget the HTTPS-only policy quickly, reducing protection between visits.
Compliance Impact
PCI-DSS 4.0Req 6.4.1
Application security header configuration
Remediation Steps
1
Update header: Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
2
Verify: curl -sI https://linear.app | grep -i strict
3
Add optional security headers (X-Frame-Options, Permissions-Policy)
linear.app has most security headers configured. Missing: X-Frame-Options, Permissions-Policy. These are best-practice additions that reduce the attack surface for client-side vulnerabilities.
Remediation Steps
1
Add: X-Frame-Options: DENY (or SAMEORIGIN if you use iframes)
2
Add: Permissions-Policy: camera=(), microphone=(), geolocation=()
3
Verify with: curl -sI https://linear.app | grep -iE 'content-security|x-frame|x-content|referrer|permissions'
Scan Findings
DNS Configuration
Warning
HSTS Header
Warning
Security Headers
Warning
TLS Configuration
Healthy
DMARC / Email Security
Healthy
Known Breaches
Healthy
CVE Exposure
Healthy
Certificate Hygiene
Healthy