57Fair

zhihu.com

scanned 4/9/2026 in 1.8s

SSL

Headers

✓

Valid certificate from DigiCert, Inc.

Expires: 12/10/2026 (245 days)

✓

Protocol: TLSv1.2

Key: 2048 bits

SANs: *.zhihu.com, zhihu.com

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!No HSTS header — browsers won't enforce HTTPS
!Security headers grade F — most headers missing

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