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An initiative from the Electronic Frontier Foundation (EFF), Mozilla, Cisco, Akamai, IdenTrust, and researchers at the University of Michigan that aims to automatically provide every domain owner with a recognized certificate that can be used for TLS.

Let's Encrypt is a certificate authority that provides free X.509 certificates for Transport Layer Security (TLS) encryption via an automated process designed to eliminate the hitherto complex process of manual creation, validation, signing, installation, and renewal of certificates for secure websites.

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