If you use Amazon's AMIs they do a lot of updates for you. Recently, they updated their AMI for the bash and SSL security exploits. If you have a permanent inst

If you use Amazon's AMIs they do a lot of updates for you. Recently, they updated their AMI for the bash and SSL security exploits. If you have a permanent instance, you would have to run some updates yourself, but if you use auto-scaling, you can just update the group and then when the instances cycle, the new updates will be applied.