May 10, 2018

Signal's self-destructing messages linger on Macs

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.

The details: The Mac notification system doesn't automatically delete old messages. Signal isn't coded to delete its own notifications, either. So even after it has deleted messages in its application, the system keeps a record of the notification of the message — even for users who have notifications turned off.

  • The bug was initially noted by Alec Muffett, with Digita's Patrick Wardle drilling down to the reasons the messages didn't delete.

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Debate night: Candidates' last face-off before Super Tuesday

Sanders, Biden, Klobuchar and Steyer in South Carolina on Feb. 25. Photo: Jim Watson/AFP via Getty Images

Sen. Bernie Sanders wanted to keep his momentum after winning contests in New Hampshire and Nevada, while former Vice President Joe Biden hoped to keep his own campaign alive. The other five candidates were just trying to hang on.

What's happening: Seven contenders for the Democratic presidential nomination were in Charleston, South Carolina, for the tenth debate, just days before the South Carolina primary and a week before Super Tuesday. They spoke, sometimes over each other, about health care, Russian interference in the election, foreign policy the economy, gun control, marijuana, education, and race.

Go deeperArrowUpdated 1 hour ago - Politics & Policy

4 takeaways from the South Carolina debate

Former Vice President Joe Biden, right, makes a point during Tuesday's Democratic presidential debate, while Vermont Sen. Bernie Sanders listens. Photo: Win McNamee/Getty Images

The 10th Democratic debate was billed as the most consequential of the primary thus far, but Tuesday night's high-stakes affair was at times awkward and unfocused as moderators struggled to rein in candidates desperate to make one last splash before Saturday's primary in South Carolina and Super Tuesday.

The big picture: After cementing himself as the Democratic favorite with a sweeping win in Nevada, Sen. Bernie Sanders came under fire as the front-runner for the first time on the debate stage. Former New York Mayor Michael Bloomberg, who will be on the ballot for the first time next Tuesday, was a progressive foil once again, but he appeared more prepared after taking a drubbing at the Nevada debate.

Coronavirus spreads to Africa as U.S. soldier in South Korea tests positive

Data: The Center for Systems Science and Engineering at Johns Hopkins, the CDC, and China's Health Ministry. Note: China numbers are for the mainland only and U.S. numbers include repatriated citizens.

A 23-year-old American soldier stationed at Camp Carroll in South Korea has tested positive to the novel coronavirus, as the outbreak spreads to more countries.

The big picture: COVID-19 has killed more than 2,700 people and infected over 80,000 others, mostly in mainland China. Public health officials confirmed Tuesday the U.S. has 57 people with the novel coronavirus, mostly those repatriated from the Diamond Princess cruise ship.

Go deeperArrowUpdated 3 hours ago - Health