Date: Thu, 12 Sep 2019 18:29:22 -0400 From: notspam@...st To: oss-security@...ts.openwall.com Subject: Re: Telegram privacy fails again. >IMO, If Whatsapp/Telegram wanted to take this functionality more seriously, >they'd need to be writing the images to disk in an encrypted form from the >outset. It increases the overhead of display, and wouldn't necessarily stop >forensic recovery etc, but it would mean that other apps couldn't simply >watch the directory and upload anything which appears in it in a usable >form. That's a whole other can of worms though as it's another set of keys >to manage. There's no way to take this functionality seriously - the feature is a joke. A privacy feature centered around trusting another user's node to delete a file you already sent them is silly. Unfortunately, it seems like nobody gets this; even Matrix clients are supposed to have message redaction soon. The original email didn't contain a security vulnerability (remember the name of this list?) - it was blogspam. It didn't belong here for the same reason that you don't see Snapchat bugs on this list.
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