Internet Security Research Group

Digital infrastructure for a more secure and privacy-respecting world. Read our Annual Report.

A Year-End Letter from our Executive Director

A summary of the progress made toward improving security and privacy with ISRG’s three projects: Let’s Encrypt serves 260M websites, our Prossimo project seeks to solve problems caused by lack of memory safety, and Divvi Up is building a privacy-preserving metrics system.

Project Update and New Name for ISRG Prio Services: Introducing Divvi Up

ISRG is developing a privacy-preserving metrics protocol and service based on Prio and Heavy-Hitters. The project is called Divvi Up.

ISRG Prio Services for Preserving Privacy in COVID-19 EN Apps

ISRG serves as one of the data processors in the Prio-based privacy-preserving metrics system used by Apple and Google’s Exposure Notifications Express (ENX) system.

Our First Project

Let's Encrypt is a free, automated, and open Certificate Authority. More than 200 million websites around the world use Let's Encrypt to protect their users.

Find out more