WhatsApp Chats Stay Even If You Delete Them

While WhatsApp rightly deserves praise for implementingend-to-end chat encryption earlier this year, forensic security researcher Jonathan Zdziarski has made the troubling discovery that your chat records remain in the database, regardless of whether you delete or archive them. Zdziarski notes that this isn't malicious on WhatsApp's part, or even intentional. While it deletes the record of a chat, it still leaves "a forensic artifact that can be recovered and reconstructed back into its original form."

The only way to make sure your chats are officially gone? For now, delete the app entirely.

http://appleinsider.com/articles/16/07/29/secure-whatsapp-found-to-not-be-completely-eradicating-chat-transcripts