Abstract: A computer network includes a first computer for use by a securities trader and a second computer for use by an account administrator. The account administrator controls a trading account owned by the securities trader from the second computer. The second computer executes instructions to perform functions including, but not limited to receiving, from the account administrator, information including a password and data identifying the trading account and the securities trader, providing the information to an authenticating server to obtain access to the trading account, and performing an action that relates to the trading account without requiring the consent of the securities trader to perform the action.