Alien databases in MySQL

I just opened phpMyAdmin and discovered four new databases that I didn't create: forumdata, freewareforum, rmoforum and veforum. When I try to drop them, MySQL returns:

Error
SQL-query:
DROP DATABASE forumdata
MySQL said: Access denied for user: 'myname@localhost' to database 'forumdata'

The databases contain no tables, and I am the only user. What are those alien monsters, where have they come from, and how to kill them? Any feedback will be appreciated. Thanks!

 

 

 

 

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