Make a few wrong moves and you’ll instantly make it easy for someone to learn all about your finances, according to the August issue of MONEY magazine.

1. Don’t disclose your Social Security number, your mother’s maiden name, bank PIN number or e-mail password to anyone with whom you do not have an established relationship of trust.

2. Don’t fill out a warranty card, call an 800 or 900 phone number, enter a sweepstakes or let your child enter a contest— unless you’re willing to have your name or your child’s name sold.

3. Don’t use your medical insurance to pay for a prescription drug or medical treatment that you don’t want your employer to know about.

4. Don’t meet with a psychiatrist or psychologist without first knowing whether or not he or she is required to share therapy notes with your managed care provider.

5. Don’t send an e-mail that you would mind seeing posted on the office bulletin board.

6. Don’t throw out bank statements, airline ticket stubs, credit-card receipts or pre-approved credit offers without shredding them.

7. Don’t type in your credit-card number or other confidential info on-line unless both you & the person with whom you are communicating use software that encrypts.

8. Don’t say anything on a cellular phone that you wouldn’t want others to hear.