Originating from the word "owned", the word later took on the 1337 variation 0wn3d. Because this was primarily used as a cry of victory or supremacy in first person shooter games online, typos occured, the most common involved missing the "o" key and hitting the "p" key. This stuck, leaving us with the words pwn, pwn4g3, and pwn3d
- strait from urbandictionary.com