The person you appoint as your attorney will have the power to legally do anything that you permit the attorney to do in the document. Some power of attorney documents are specific to a task, such as signing legal documents for a real estate transaction. Most attorney documents drafted without a specific task in mind will permit the appointed person the power to do anything that the appointing person could legally do. This would mean that the appointee could take funds out of your bank, transfer your property to a third party or sell any of your assets. You risk the appointed person acting in a way that you did not intend, making poor financial decisions or even stealing from you.