When one thinks of malicious attacks on a businesses network, most assume that the organisation has in preparation ensured its network and nodes have the latest version of anti-virus software, additional protection in the form of gateway protection, intrusion detection and, in some cases, intrusion prevention, firewalls and all the necessary tools to prevent a disaster.

However, what happens in a Linux or "open source" environment? Is it a case of those users sitting back and smiling smugly in the confidence that Microsoft's Windows systems are the only target? Think again.

It has been some years since the discovery of the first Linux binary virus Linux/Bliss and, slowly but surely, there has been an increase of activity as it was clearly demonstrated that Linux was vulnerable to attacks.

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