Our mission is to reduce financial, technological, and educational barriers to secure communication over the Internet. We're focused on building a more secure and privacy-respecting Internet. We realize this aim via our projects: Let's Encrypt, the world's largest certificate authority providing free TLS certs for hundreds of millions of websites; Divvi Up, a service for privacy-respecting metrics; and Prossimo, a project focused on providing memory safety for the Internet's most critical infrastructure.