Whatsapp is not well encrypted – Scientist

Software researcher Jonathan Zdziarski has found that WhatsApp retains & stores a forensic trace of the chat logs even after chats get deleted. The data can be recoverable through many remote backup systems. Zdziarski found this out after examining disk images from the most recent version of WhatsApp & blames the issue to the SQLite library used in the app. Although in most cases the app itself deletes the data, but because it isn’t overwritten it can be recovered. WhatsApp uses the much applauded Signal protocol but only protects the data in transit which prevents carriers from spying on conversations. In the iCloud, they are backed up without hard encryption so police can easily obtain clear records of conversations through a court order even after it is deleted in the app. Zdziarski wrote, “The core issue here is that ephemeral communication is not ephemeral on disk… iMessage leaves a lot [of forensic traces].”

 

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