Automating moderation of phishing in markdown links #11

From https://discord.com/channels/372137812037730304/1110589804057468928/1328390426872516628

Background

Discord supports sending markdown in messages.

Problem

This is often abused for phishing purposes, links appearing to go to one domain but actually redirect to another.

Solution

We could auto-detect if a markdown link is sent where the displayed text url doesn't match the actual url.

Once these have been detected, we could:

• Auto-remove the message
• If a well-known phishing attempt is made (such as the 'steam gift card' scam)
  • Auto-infraction may be on the board if they're an established community member
  • Auto-ban is recommended if this is the first message in the server from this account
• Notify moderators or staff, especially if manual action is needed.