This is not a hacking tutorial, this is more of idea sharing and the how careless programing practices can lead to security holes which are not apparent, and some of which are rather glaring and very silly, and even after suggestions they are not fixed. The below content is just some basic things I learnt and still learning and just wanted to...

I started mapping using Source SDK using Hammer Editor for making a map for Left4 dead 1,first it was one map thing that I started, but then kept hitting a road block as in running out of ideas. But some how I made three maps, and stuck on the navigation part most of the times. I had problems building nav meshes, thought I followed tutorials and...