There are provided methods (100) and apparatuses for authenticating components in an electric machine. For example, there is provided a method (100) for authenticating parts of an electric machine. The method (100) includes fetching (104), using a controller, identification data associated with a set of parts and performing a first verification step (106) on the identification data, for each part in the set. The method (100) further includes performing a second verification step (114) on the identification data, in response to the first verification step (106) being successful (108). The second verification step (114) includes comparing the identification data with data from a database that includes identification information associated with manufactured parts. Furthermore, the method (100) includes, in response to one of the first verification step and the second verification step being unsuccessful (108), issuing by the controller, a command to disable the electric machine.