This is a Friendly PSA
In case you may have these bots I am not trying to scare or call for a boycott of discord
if you are privacy conscious, you probably should self-host your own bot
Old Outdated post
Some of the most popular discord bots have been acquired by the blue stacks developer. If you use any of the following bots, you could be tracked.
If you are data sensitive for your users, at the present moment, the best thing to do now is to remove the bots from the server.
After removing the bot you may want to either host your own bot or find an alternative. Long term it seems more secure and less of a potential headache to host your own.
Yagpdb has the MIT license in addition to having a guide to selfhosting the bot on your own server
As I find open source alternatives I will update the thread