Adwords Keyword Spysoftware

[Quade]

Hi everyone,

I'm new here and this is my first post. I hope I'm posting this in the correct forum.

There's been a lot a talk in the last few weeks about Keyword Spying software that goes out and finds out what keywords are being used in successful Adwords campaigns. Basically, spying on your competitors.

I'm just wondering how they do that and are they getting this information from Google?

More importantly how do I protect my campaigns from being spied on?

Thanks,

Quade