Sheeri Cabral, Senior DB Admin/Architect at Mozilla, make a presentation about MySQL security. All the aspects of MySQL security are presented in this talk: backup access, encryption, network access, access to operating systems and logs, etc.
Presentation slides: http://technocation.org/files/doc/2012_05_MySQLSecurityPres.pdf
Meeting organizer: Boston MySQL Meetup Group
Video producer: http://www.technocation.org/