Security News This Week: So, Turns Out WhatsApp Chats Stay Even if You Delete Them

From Wired:

It was a throwback week in security, with Russia dominating most of the headlines. The consensus seems to be that Putin’s cyber squad was behind the DNC hack, while Donald Trump urged our former Cold War adversaries to find and release Hillary Clinton’s lost emails. Meanwhile, Wikileaks continued to show just how far from the moral high ground it has fallen.

There was non-Russia news aplenty as well. Researchers demonstrated that if you use a wireless keyboard, you should maybe stop unless you want your keystrokes logged. We took a look at how artificial intelligence sure is smart, but it too can make mistakes with serious security implications. And the same could arguably said of this gaggle of robots that law enforcement deploys around the world.

But there was more: Each Saturday we round up the news stories that we didn’t break or cover in depth at WIRED, but which deserve your attention. As always, click on the headlines to read the full story in each link posted. And stay safe out there.

While WhatsApp rightly deserves praise for implementing end-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.

Well, here’s a new twist on an old …

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