How to prevent from fraud?

Before one or 2 days i recieved 2 clicks on my adsense adv and only 1 cent recieved in acount! I understand that somebody click twice on my advertise.
My question is are You using some skript when one IP click once on the advertise, then on the place of the ads advertise show some picture or this adv stay hidden to the next 24 hours? How You protect from fraud clicks?
This is my big problem! Thanks!

 

i am also waiting for this

 

google dont count invalid click untill they are too much,
Don't worry if somebody did it twice thrice or even 6 time(it happens with me)

For prevention, use adlogger, it can block ads to those people who click the ads many times, you can set a limit yourself....

 

yup.. don't worrie.. but if U clik.. google not pay

 

adlogger is good but how can use it for windows server for asp

 

for best of all , contact google whenever you think you have got invalid clicks, there is a form for submitting invalid click report, use it

 

yes but i must stay all day and wait to see when i rev fraud clicks. When i have 500 uniqs per day and over 1000 reloads this is imposible.

 

Having different ads in an adblock getting clicked twice hardly renders it click fraud.

 

ok i must ask How to prevent from invalid clicks?

 

Why google cant give the tool for block invalid clicks or impression ???
its easy to create ...!!!

 

google cant give it

https://www.google.com/adsense/support/bin/answer.py?answer=32870&topic=8426

 

i hate when that happens

 

some one using this http://www.asrep.com