Another introduction level training of mine about XSS and SQL injections. If you need some presentation material for your about to do training then you can use mine as you wish.
Last week Melih Taş (@artinscience) and I made a brief introduction about VoIP networks and security issues on these networks at Siber Guvenlik Dernegi. Presentation files can be downloaded from the below link (unfortunately both of them are only in Turkish).