![]() Vulnerable users will also be required to re-register the Signal app on their smartphones. "In the case that an attacker was able to re-register an account, they could send and receive Signal messages from that phone number."Īs a result, Signal is contacting the 1,900 affected users about the potential data exposure via an SMS message. "Among the 1,900 phone numbers, the attacker explicitly searched for three numbers, and we’ve received a report from one of those three users that their account was re-registered," Signal says (Opens in a new window). In the wrong hands, the exposed information paves the way for an attacker “to register a Signal user’s phone number on a new device if that user had not enabled registration lock,” or what amounts to a hijacking risk, the messaging app says. In addition, the same users may have had the SMS codes needed to register the Signal app to a smartphone leaked to the hackers. How to Set Up Two-Factor AuthenticationĮncrypted chat service Signal is reporting that 1,900 users may have had their phone numbers leaked due to hackers breaching Twilio, a service provider for the messaging app.How to Record the Screen on Your Windows PC or Mac.How to Convert YouTube Videos to MP3 Files.How to Save Money on Your Cell Phone Bill.How to Free Up Space on Your iPhone or iPad.How to Block Robotexts and Spam Messages.
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February 2023
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