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Lift is an expressive and elegant framework for writing web applications. Lift stresses the importance of security, maintainability, scalability and performance, while allowing for high levels of developer productivity. Lift open source software licensed under an Apache 2.0 license.

In this book, we'll be using the freely available IBuySpy Portal as a starting point for our intranet development. We'll look at both why we are modifying an existing intranet application rather than creating our own, and why we choose the IBuySpy Portal in particular. Once we have covered the basics, we'll take a tour of its features, looking at the files and types it consists of, how they function and fit together, and general principles behind the site. Finally, we'll take a brief look at how security is handled.

La Content Security Policy (CSP) consiste en une en-tête HTTP nommée X-Content-Security-Policy renvoyé par le serveur et pouvant accepter différentes valeurs. Le but étant d'empêcher le chargement d'image, de script distant non-autorisé ou l'exécution de certaines fonctions JavaScript. Tout un panel d'options est disponible dans le cahier des spécifications des SCP (en). Ce système n'affectera pas les navigateurs ne supportant pas la directive X-Content-Security-Policy.

Although this is an absolutely free trial, Safari Books Online does require that you enter credit card information for security purposes. We will authenticate your card at the beginning of your trial period to determine if the card number is valid. We do this by issuing a "dummy" $1 charge. This charge is never actually applied to your credit card because it disappears as soon as we verify the authenticity of the card. Occasionally, depending on how your bank or credit card issuer handles these types of tests, customers may see this charge in their account, but it always drops off. If your free trial period ends and you have not cancelled your account, you are authorizing us to automatically charge your card the monthly fee (plus any applicable taxes) for the subscription type you have chosen.