What happens if you click a fake nitro Link?
Discord Nitro is a paid service for a better Discord experience with lots of extra benefits. Scammers contact you on Discord, claiming that they've got an extra Discord Nitro account and that you can claim it via an attached link.
Open User Settings > Nitro Gifting and generate a new link.
This “friend” will contact the person and accuse them of sending private photos. The message is typically accompanied by a link inviting the person to a Discord server, where they are asked to “verify” their account by scanning a QR code. If they scan the code, the scammer will gain access to their account.
The Google Safe Browsing API should be used to scan links in any text chat. I was recently sent a link to a known scam site "steamspecial.org", and Discord embeds the site with the site's title and description without any indicator that the site is not safe.