Re: Telegram privacy fails again.

[notspam () mm st]

> > 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.
>
> It is still a useful feature as long as you don't consider it
> "secure".

In the immediate term, yes, it's easy to see potential benefits. In
the long term, it will harm people.

> If a user of the software took the "delete" claim at face value then it
> could be considered security related ..

Second line of the original email: "This is not a security vulnerability it’s a privacy issue."

> and unlike Snapchat, the Telegram client *is* open source.

The Telegram ecosystem is closed-source.

Regardless, Telegram clients don't have to respect this setting, so
the feature is a lie. The only way to enforce message deletion is
through drm-like means (Snapchat...), which doesn't work anyway. That
Telegram allows third-party clients only makes it worse, in a way.