The Method evaluation of the residual vulnerability of the information systems (or Mélisa ) is a method of analysis of risks developped at the point within the framework of the French Head office of the Armament by Albert Harari.

The method was repurchased by the company CF6 which made of it the promotion during many years, and which developed knowledge bases for the majority of the systems likely to be met by its consultant. Since the repurchase of CF6 by in Telindus, Melisa was given up by its owners although it was largely used in France.