Has Standard Notes completed a third-party security audit?

We've completed four (4) security audits to date by industry-leading security firms, which cover the entirety of our ecosystem. You can review the results below.

• Server Backend Penetration Test and Security Assessment — 2022

  This audit covered our server applications and services, including syncing, authentication, and files.

  Conducted by Cure53, Berlin.

  View Report

• Client-side Protocol and Encryption Security Assessment — 2020

  This audit covers the entirety of our shared client-side framework for encrypting and syncing data, and covers our usage of industry-leading algorithms like Argon2 and XChaCha20-Poly1305.

  Conducted by Trail of Bits, New York.

  View Report

• Full Ecosystem Penetration Test — 2019

  This extensive audit covered the entirety of our ecosystem, both client-side and server-side, with the aim of penetrating the code and executables to achieve unintended effects and discover latent vulnerabilities. We're happy to report that 100% of the issues found were promptly resolved.

  Conducted by Cure53, Berlin.

  View Report

• Cryptography Design Review — 2017

  This early audit helped ensure our initial client-side encryption and server-side communication systems were built correctly and strongly.

  Conducted by Shackle Labs, United States.

  View Report