The present invention relates to the field of securing electronic transactions and more specifically to methods to indicate and verify the approval of the risk level of a transaction and to apparatuses for generating transaction risk level approval codes.In a method according to the invention transactions are classified into a limited number of categories. A user submitting a transaction to a server is requested to also generate and submit a dynamic transaction category approval code for the submitted transaction. On the server side a corresponding verification value is generated for the received transaction. In an alternative method according to the invention transactions are assigned one of a limited number of risk levels. A user submitting a transaction to a server is requested to also generate and submit a dynamic risk level approval code for the submitted transaction. On the server side a corresponding verification value is generated for the received transaction. The received dynamic risk level approval code is verified on the server side by comparing it with the generated verification value. A security token to secure electronic transactions adapted to generate dynamic transaction category approval codes and a security token to secure electronic transactions adapted to generate dynamic risk level approval codes are also described.