Suppose an attorney is short of funds so, without the knowledge of his client, he removes funds he holds in an escrow account for the client and deposits it into his personal account. A few months later, he returns all of the funds to the escrow account and because he is so grateful for the use of the funds, the attorney decides to add a sizable amount of interest. The amount added far exceeds the amount of interest the escrow account would have earned.

Has the attorney breached his/her ethical duty to the client? Why or why not?