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Sent WhatsApp messages can be deleted, but they don't really go away


Encrypted messaging platform WhatsApp recently added the ability to delete sent messages, but the team at Android Jefe (article is in Spanish) has discovered that they don't quite disappear completely.

A deleted text still exists on the recipient's device in the form of a notification, Android Jefe found, and with the proper software it can be read hours later.

As an individual bug it might not sound too concerning, but the Android notification log doesn't exist in a vacuum. If an Android device has already been compromised by malware, the notification log could be a way for anyone to read WhatsApp messages, deleted or not, and that's a huge security problem for an app that prides itself on being private and secure.

Android notifications and you

Every time a notification comes to an Android device it gets stored in a log that records everything from that Android session (it clears on reboot). If you can access the notification log you can see a list of every single...(continued)

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