Code of Federal Regulations Title 31. Money and Finance–Treasury § 31.363.17 Who is liable if someone else accesses my TreasuryDirect® account using my password?

You are solely responsible for the confidentiality and use of your account number, password, and any other form(s) of authentication we may require. We will treat any transactions conducted using your password as having been authorized by you. We are not liable for any loss, liability, cost, or expense that you may incur as a result of transactions made using your password.