Let's Encrypt / ISRG
The Internet Security Research Group (ISRG) is a non-profit organization that provides the Let's Encrypt certificate authority. Its mission is to reduce financial, technological, and education barriers to secure communication over the Internet by providing free, automated, and open security services.
Brand Authority Index (BAI): 92/100
Archetype: Challenger
Category: Cybersecurity and Internet Infrastructure
https://optimly.ai/brand/lets-encrypt-isrg
Last analyzed: April 11, 2026
Verified from Let's Encrypt / ISRG website
Founded: 2013
Headquarters: San Francisco, California, USA
AI-Suggested Alternatives
Buyer Intent Signals for Let's Encrypt / ISRG
Problems this brand solves
- Self-Signed Certificates: Using self-signed certificates which do not provide browser trust.
- No Encryption: Allowing site security to lapse or using unencrypted HTTP.
Buyers search for
- free ssl certificates
- how to automate certificate renewal
- what is the ACME protocol
- privacy preserving measurement tools
- non-profit internet security organizations
- Commercial Certificate Authorities: Buying commercial SSL/TLS certificates from traditional providers.