From Bibliotheca Anonoma
- [Hide Apache Header Information](http://www.serverschool.com/server-security/how-to-hide-apache-header-information/) - Apache tells the world about the operating system, the modules, and the version currently running. This can be a big target for attackers that lets them know what version to try.
- Better yet though, you can set your own silly strings there instead.
- Security through Obscurity is nothing safe though.