What is Signal? The private chat app is only private if you use it right
CNN
If you hadn’t heard of Signal before Monday, chances are you have now.
If you hadn’t heard of Signal before Monday, chances are you have now. The secure messaging app, available for iPhones and Android devices, has long been popular with journalists because of its robust privacy features. But the Atlantic’s editor in chief, Jeffrey Goldberg, revealed on Monday that he had been added to a group chat with President Donald Trump’s Cabinet members about military strikes on Yemen – raising serious national security concerns. While Signal offers more privacy perks compared to other messaging apps, it’s not meant for sharing classified government and military information. Some factors are beyond the app’s control – such as who the user is contacting, and whether the devices running the app are secure. “In the specific case of Signal, messages may be secure when they are in transit between phones, but once they reach the recipient, security can indeed fail,” Matthew Mittelsteadt, a technology policy research fellow for the Cato Institute, said in an emailed statement to CNN. However, if you use the app as intended, there are a lot of protections built into Signal to help prevent conversations from falling into the wrong hands. Unlike other popular messaging apps, Signal is operated by a non-profit called the Signal Technology Foundation rather than a for-profit tech giant like Meta, which owns popular messaging apps like Instagram and WhatsApp, or Apple, whose iMessage platform is available across the company’s devices.
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