Know who you are dealing with. If you have not heard of a person or company that you intend to do business with, learn more about them. Depending on the amount of money that you intend to spend, you may want to visit the business location, check with the Better Business Bureau, or consult with your bank, an attorney, or the police.
Make sure you fully understand any business agreement that you enter into. If the terms are complex, have them reviewed by a competent attorney.
Be wary of businesses that operate out of post office boxes or mail drops and do not have a street address, or of dealing with persons who do not have a direct telephone line, who are never “in” when you call, but always return your call later.
Be wary of business deals that require you to sign nondisclosure or noncircumvention agreements that are designed to prevent you from independently verifying the bona fides of the people with whom you intend to do business. Con artists often use noncircumvention agreements to threaten their victims with civil suit if they report their losses to law enforcement.