An approach is provided for password re-usage identification based on an Input Method Editor (IME) analysis. The approach analyzes a number of keystrokes received from a user at the IME that is running on the information handling system. A set of keystrokes received at the IME are identified as a possible new password that is being established by the user. A set of existing password data is searched with the search being based on the possible new password. The set of existing passwords are stored in a data store accessible from at least one of the processors of the information handling system. In response to the searching identifying that one of the existing passwords matches the possible new password, a notification, or warning, is displayed to the user.