When new users install popular mobile messengers (like WhatsApp, Telegram, or Signal), users can start messaging existing contacts based on the mobile numbers stored on their mobile devices instantly. For this, users must allow the app permission to access and transmit their address book to company servers frequently which is called mobile contact discovery . According to a team of researchers from the Secure Software Systems Group and Privacy Engineering Group, currently deployed contact discovery services highly threaten the privacy of billions of mobile messengers users . A team of researchers also demonstrated the practical crawling attack on popular mobile messengers like WhatsApp, Telegram, and Signal. And the results of this experiment show that hackers can collect private sensitive data at a very large scale and without significant restrictions by querying mobile contact discovery services for any random mobile numbers . For further study, the team of researchers queried aroun
If you are a user of Facebook Messenger then now would be a time to think about its alternatives. Recently, Facebook revealed a major security feature for Messenger that allows users to unlock their chat messages by scanning faces (Biometric feature) on iOS . However, the sad truth is that Facebook Messenger is lacking on the security front and that issue Facebook can't easily fix. While announcing its latest security feature update for Messenger, Facebook told that this biometric app lock feature would add an additional layer of security to your private chat messages and prevent other people from accessing those private chat messages. However, unfortunately, this security update is like adding additional locks to the front door of a bank while leaving the vault wide open . There are many alternatives that offer most of the similar functionality without the risks. That's why now it's time to switch. What's The Problem? The problem is — encr