It’s always funny to read the institution’s definitions of slang. This is my favorite:

“pwn”: A typo-deliberate version of own, a slang term that means to dominate. This could also be spelled “0\/\/n3d” or “pwn3d,” among other variations. Online video game bullies or “griefers” often use this term.

The griefer guide is entitled “Ready, set, game: Learn how to keep video gaming safe and fun 10 tips for dealing with game cyberbullies and griefers”

Remember kids - duck and cover. Thanks Fico.