https://antipolygraph.org/blog/2015/06/07/developers-silence-raises-concern-... http://www.csmonitor.com/World/Passcode/Passcode-Voices/2015/0617/Opinion-Is... https://www.surespot.me/documents/how_surespot_works.html https://www.surespot.me/documents/threat.html https://github.com/surespot https://www.eff.org/secure-messaging-scorecard Note that as with most new projects, SureSpot is unaudited, centralized, run by relative unknowns, nor is it known whether anyone is publicly validating the supposed source code to the distributed binaries and server protocols with each version.