September 3, 2011
Over the past few months, I have heard that question many times.
Deepa Subramaniam, Senior PM for the Flex team, alleviates those concerns with her post (rather a post on the Flex team blog).
It is a must read.
March 25, 2010
Interesting read here about how to secure your Flex 4 application, provided you use a Spring enabled Java server.
March 22, 2010
Today, Adobe released the official version of the Flex 4 SDK as well as the new Flex IDE/eclipse plugin named Flash Builder 4.
As with Flex Builder 3, there are two versions of Flash Builder 4: Standard & Professional. The main difference is Profiling and network monitoring features.
Purchase/upgrade costs are described here.
You can download the free Flex 4 SDK here.
You can download a free trial of Flash Builder 4 here.
*** BONUS ***
If you are a student or faculty member with a valid id as proof, you can get the Flash Builder 4 Standard for free here (for non-commencial use).