As the borderline between a web site and an application blurs, so does the division between the enterprise IT and the internet. More and more enterprises adapt core applications which are provided as a service over the Internet. Until recently those where limited to vertical applications such as salesforce.com for sales automation and monster.com for recruiting, both of which have already suffered major security issues that compromises customer data. Google software push has led to enterprise adaption of general purpose cloud services including office tools, mail and knowledge management, which presents an entirely new risk level. In this presentation we will discuss the security risks of SaaS (Software as a service) and review past incidents on such services. We will than dissect the security implications of using Google Apps as an example for a SaaS and create a checklist of things to examine in a SaaS offering before subscribing to ensure that it provides sufficient security. Lastly we will discuss the solutions offered by Google as well as 3rd party solutions.