There's a reasonable expectation for privacy that comes with using direct messages, but no should ever count on that. That's ...

The issue has been resolved now, but could have caused major harm if exploited.

Here's a reminder that when you connect up various accounts - you may end up just increasing the risk of your private data ...

Security issues in Arc Raiders' Discord integration led to players' messages and other private information being logged in plaintext.

Embark Studios has quietly acknowledged unexpected security issues for ARC Raiders and Discord integration, but only in their Discord.