$3 has been deducted from my Google Adsense account
Today I visited my Google Adsense account and found that $3 has been deducted from my account of July as invalid traffic. I do not know how did it happen? I have never done anything illegal. Is this a matter of concern? What should I do now? How can I prevent this type of invalid traffic? Should I inform the Google Adsense team for the same?The respected members are requested to guide me about the matter. My knowledge about Google Adsense is as a drop of water in ocean.