Hi, A friend of mine came across with a tool that allows me to know the exact words that is using my concurrence and the exact value they are paying for it along with lots more information that will put me far ahead from my concurrence. Since I am totally new in this world of PPC, I am not sure that looking into the private numbers of my concurrence will be legally correct or even that Google could realize I am using this method and penalize my account for that. Could anybody please tell me anything about that topic? Thanks
Google wouldn't be able to detect your doings as long as there is no involvement with your account while using the tool. It is highly unethical however and you could be reported to Google if the competitors were to find out.
It is not illegal in any way, as I dont think the tool actually breaks into competitors Adwords accounts to snoop on their accounts. There are many such spying and research tools available, so you shouldnt have any problems with it.