Hack Minecraft Account through Minecraft Logs?

I showed my Minecraft to someone earlier, so you can hack accounts or log in

No,

in no reasonably successful program, passwords are written in the log files, in fewer programs these are then in plain text. Therefore there's nothing to fear

The UUID and the IP could not be inside, which would be so moving now

The one needs your email address and password and if you log in to a foreign location there are again 3 security questions that you can't avoid