59Fair
harvard.edu
scanned 4/9/2026 in 0.7s
A
SSLF
Headers✓
Valid certificate from Let's Encrypt
Expires: 6/6/2026 (58 days)
✓
Protocol: TLSv1.3
Key: 256 bits
SANs: harvard.edu, www.harvard.edu
Monitor harvard.edu
Things break silently. Get alerts when your SSL expires, headers change, or your score drops.
- !SSL certificate expires in 58 days
- !No HSTS header — browsers won't enforce HTTPS
- !Security headers grade F — most headers missing
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