Moreover, webhooks are easy to set up and use with minimal coding knowledge, enable real-time exfiltration, are cost-effective, and have the added benefit of Discord's infrastructure availability ...

Researchers discovered a simple malware builder designed to steal credentials, then pinging them to Discord webhooks.

Discord's permanent file hosting capabilities have frequently been misused to distribute malware and exfiltrate data gathered from compromised systems using webhooks.

Discord webhooks are used to automate messages based on activities in other applications: for example, the official documentation describes making a bot that notifies a channel of new GitHub commits.