SSL Certificate: upenn.edu

đŸŸĸ Valid Certificate
Common Namehome.www.upenn.edu
IssuerLet's Encrypt
Issuer CNR13
Valid FromFeb 5 17:37:03 2026 GMT
Valid UntilMay 6 17:37:02 2026 GMT (30 days left)
Serial Number05812D29F3A43C23783F568734FE5136890F
â„šī¸ About SSL Certificates

SSL (Secure Sockets Layer) certificates encrypt data between your browser and upenn.edu's server. A valid SSL certificate ensures that your connection is private and that you're communicating with the real Upenn website.

Websites without valid SSL certificates may show browser warnings and are penalized in search engine rankings.