sigdoubt | 9 years ago | on: Journalists confused an opinion piece for an alcohol-cancer study
sigdoubt's comments
sigdoubt | 9 years ago | on: License update
Tangentially related, but since we're talking about Signal and have Moxie's attention ...
Does anybody know how the "privacy preserving contact discovery" works?
One of my unpleasant experiences with Signal was receiving a greeting from an unknown number when I installed it. Fortunately, it was a friend with a new number I hadn't known ... but the potential privacy leak - without any apparent warning, consent or opportunity to opt-out - bothered me.
Best info I could find is a blog basically saying "privacy preserving contact discovery is an unsolved problem" ... which is hardly reassuring:
https://whispersystems.org/blog/contact-discovery/
What's the story?
page 1
> She goes on, however, to knock back links suggesting that drinking may lower a person's risks of cardiovascular disease (CVD), noting that people who drink moderately also tend to have other lifestyle factors that lower their disease risk. Or, put another way, she noted that “in a large US survey in 2005, 27 of 30 CVD risk factors were shown to be more prevalent in abstainers than moderate drinkers.”