The “Security sandbox violation” message is a common problem for any Flash developer who try to do a Snapshot of an RTMP Stream. There was a couple of workaround but they stopped working since Flash Player 9.0.115 as it was considered as a possible bug. So, now how to do a proper snapshot of an RTMP stream ? The answer is simple but you’ll need to have the control on the streaming server, whatever it is FMS or Red5.
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Aug 30 2009
Jun 08 2009
Jul 13 2008
Using losetup and dd to secure sensitive data (encrypted block device)
Bash - GNU Shell, Case Study CommentsMy previous post was made a long time ago, so here is a draft that I finally decide to post. Let’s see how to secure some of your data with an encrypted block device using losetup and dd.
Steps will be :
- Create an image with dd
- Build a new device using the image with an encrypt algorythm by using losetup
- Format the device using mkfs.ext3
- Mount the device and start using it !
Of course, when you have mounted the device, your data are readable to anyone who have access to the mounted directory.

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