To Setup a Google Personal Data Alert:
1. Go to www.google.com/dashboard and log in with your Google ID (i.e Gmail, Google+, etc).
2. Under the "Me on the Web" section, click on the link that says "Set up search alerts for your data".
3. Click the check boxes for either "Your name", "Your email", or enter a custom search alert for your phone number, address, or any other personal data you want alerts on. I would advise against searching for your social security number because if your Google account is hacked and the hackers look at your alerts then they would see your social security number if you had an alert set for it.
4. Choose how often you want to receive personal data alerts by clicking on the drop down box next to the words "How Often". You can choose between, "As it happens", "Once a day", or "Once a week".
5. Click the "Save" button.