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I've participated in the Web Application Security Training by Elar Lang from Clarified Security. It's very detailed and thorough hands-on 4 days training for web programmers, testers and all people, that are related to web development.
As for me, it's must-do for all web developers and testers. If you look at the content (especially client-side part), then it may seem to be too general and basic, but actually these well known things are explained in a quite deep and advanced level.
Organization is really nice feature of this training: first we had 2 days of client-side part and next week 2 days of server-side part, so between them I had 3 working days to work through client-side attacks on my application. Also, there can be maximum 12 participants, which makes the treaining more individual.
In summary – I really recommend it to people, who thinks that their software is safe or that there is nothing to wory about even if it's not.