Signal (software)

Signal's self-destructing messages linger on Macs

Macbook in use
A Macbook air in an Apple store. Photo: Brian Kersey/Getty Images

Signal Messenger's self-destructing messages are saved by the Apple Mac operating system's notification feature.

Why it matters: The end-to-end encrypted Signal is as close to a gold standard in secure chat as you will find among privacy-conscious users. But that was in part because the messages weren't stored beyond pre-designated time limits. Now, every old message is fair game for hackers again, provided it was sent to someone using a Mac version of Signal.

Amazon threatens to cut off Signal encrypted chat

Graffiti reading "Use Signal" above an anarchy symbol.
Signal is a favorite app of dissidents and protestors worldwide, as seen in a 2017 Berkeley, Calif. protest. Photo: Elijah Nouvelag via Getty

The encrypted messaging app Signal said Tuesday it had been threatened by Amazon's cloud division after disguising Signal traffic as an Amazon site.

Why it matters: The Signal app, like most apps, used a trick called "domain fronting" to circumvent censorship measures by countries like Iran. Amazon banned domain fronting on Friday, leaving Signal and countless protesters worldwide in the lurch.