Have you ever wondered how Google managed to secure its own data centre, networks and applications, and whether or not you can trust Google with your data? This lengthy article is well worth reading and provides a surprising level of detail on Google's approach to security. There is something in the article for everyone.
Google has a global scale technical infrastructure designed to provide security through the entire information processing lifecycle at Google. This infrastructure provides secure deployment of services, secure storage of data with end user privacy safeguards, secure communications between services, secure and private communication with customers over the internet, and safe operation by administrators.