From the Overkill? dept.:
...the SANS Technology Institute, a security research and education organization, challenged its students with creating a white paper to determine the most effective methods for small and mid-sized businesses to mitigate the threat from these types of attacks. Their conclusion? While there are multiple layers that of protection that businesses and banks could put in place, the cheapest and most foolproof solution is to use a read-only, bootable operating system, such as Knoppix, or Ubuntu.