On the webmontag.de gathering at Munich, Johann gave a session about „Web2.0 (In)Security“. With the emerge of more and more Web2.0 applications Security is a must for every developer. Johann explained for example why XSS hurts more in Web2.0 than in Web1.0.
You can download the slides here (attention, German language).
Web2.0 also seems to become a more and more popular topic here in Germany, see sevenload.de and the „Next 10 Years“ conference about Web2.0, hosted by SinnerSchrader. There’s some live blogging about it, see sichelputzer, beissholz.de, Oliver Gassner (see soso blog), fischmarkt.de and others.