<![CDATA[This cross-sectional study assesses TLS and security response headers on 16 purposively selected institutional websites: four public and twelve private universities in the LLDIKTI IV service area. Verified TLS connections and limited homepage requests supported a criterion-based configuration assessment. Twelve HTTPS HTML homepages were eligible for header analysis; three returned blocking responses and one showed client-dependent certificate verification. Fifteen successful handshakes negotiated TLS 1.3. HSTS appeared on 8/12 homepages, nosniff on 7/12, and active CSP on 5/12. Five met the framing profile and one met the selected Referrer-Policy profile. No observed CSP met the selected script, object, and base-URI profile. Independent checks confirmed assessed header values on three homepages. Findings support targeted configuration ownership, staged policy deployment, and repeatable monitoring. The nonprobability sample and uneven coverage restrict population-level conclusions]]>
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