Adding ephemeral message sends to the dm_channels.read scope

[SammyWhamy]

Description

The dm_channels.read scope could include a way for bots to send ephemeral messages inside a user's DMs.

Why

Currently the dm_channels.read scope is a very interesting scope. I personally can't think of a lot of use cases to use this scope. However, by allowing the bot to interact in said channel, some new uses can open up. Bots could actually interact with whatever content is being read, without having to open up a new DM channel or use other means of communication with the user.

Practical use

This idea originated when I was brainstorming an idea for a bot against phishing links. While a lot of phishing links are sent in servers, the vast majority is sent in users DMs, and users seem to be a lot more prone to actually clicking these.
A bot with the dm_channels.read scope could be used to scan DMs for malicious content.
Allowing the bot to then use ephemeral messages could make this idea work pretty well. For example when this bot would find a malicious link in the users DMs, it could send an ephemeral reply to notify the user of the possible dangers of this link. This would be a simple and nonintrusive way to notify a user.

[JABirchall]

This would be a massive security and privacy risk. And most likly will never happen.