Attack of the open source zombies

A cluster of web servers serving both legitimate content and malware:
http://www.theregister.co.uk/2009/09/12/linux_zombies_push_malware/

RSA whitepaper on security implications of virtualised environments

Although fairly VMWare/EMC centric in the solutions section, this paper raises some important considerations with regards to security in a virtualised environment related to:

1. Platform hardening,
2. Configuration and change management,
3. Administrative access control,
4. Network security and segmentation,
5. Audit logging.

Registration required:
https://rsa-email.rsa.com/servlet/campaignrespondent?_ID_=rsa.4696&WPID=10393