EFF Secure Messaging Scorecard
eff.org
eff.org
Given the comments you linked to, and the time that has passed. Is this still your top suggestion?
Additionally, in your mind, what criteria are most important for you (if you were going to build your own scorecard, which I know you cautioned against) to help the cause of getting people to use secure messaging?
Put another way, if a new secure messaging service came out, how would you identify that it's a TextSecure-like recommendation vs a cryptocat-like recommendation (other than the obvious 'they rolled their own encryption, and did it badly')?
The other approach, of designing user-friendly instant messaging systems and then layering cryptography on top, has been pretty much an unmitigated disaster. Cryptocat is the post child for these systems --- and the EFF scorecard gave it a perfect score! Some of these systems DIY their crypto --- Telegram is like that, as was Cryptocat --- and suffer accordingly. Others pull in secure cryptography libraries like Nacl/Sodium. Those are marginally more secure, but cryptographic secure messaging is its own problem domain, and Nacl/Sodium doesn't help much with them.
For me, the most important question in a secure messenger is whether it's actually secure. The second most important question is how many people can I talk to using it. A very, very distant third question is "how usable is it?"
There's no one system that gives you all those attributes, so I suggest looking at secure messaging as 2-3 problems, not just one:
https://news.ycombinator.com/item?id=11454172
If it was up to me, there wouldn't be scorecards for secure messaging systems. I think they intrinsically oversimplify a complicated problem. But I have a lot of thoughts on what would and wouldn't make such a scorecard less terrible. I'm waiting for EFF to release the "re-done" scorecard to write them up.
† Silent circle is at an uncomfortable intersection of being closed source and not particularly popular, so it doesn't get much attention.
Hang on, what about iMessage or OTR-over-anything.
https://twitter.com/thegrugq/status/722086033458790400
https://twitter.com/thegrugq/status/722084986413649920
Their continued support for this messaging scorecard is one of the primary reasons I no longer support the EFF.